1
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13 changed files with 1016 additions and 0 deletions
BIN
assets/font.chr
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BIN
assets/font.chr
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BIN
assets/font.xcf
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BIN
assets/font.xcf
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BIN
assets/page1.chr
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BIN
assets/page1.chr
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45
compile.bat
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45
compile.bat
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@ -0,0 +1,45 @@
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@ECHO off
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ECHO.
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ECHO Compiling main.asm
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ECHO rgbasm -o main.o main.asm
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C:\Users\jonatan.SAMSYN\Documents\gb\tools\compiler\rgbasm -o main.o main.asm
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IF %ERRORLEVEL% NEQ 0 (
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ECHO.
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ECHO Error linking, exiting
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GOTO eof
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)
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ECHO.
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ECHO Linking main.o
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ECHO rgblink -o test.gb main.o
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C:\Users\jonatan.SAMSYN\Documents\gb\tools\compiler\rgblink -o test.gb main.o
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IF %ERRORLEVEL% NEQ 0 (
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ECHO.
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ECHO Error linking, exiting
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GOTO eof
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)
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ECHO.
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ECHO Touching up
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ECHO rgbfix -v -p 0 test.gb
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@C:\Users\jonatan.SAMSYN\Documents\gb\tools\compiler\rgbfix -v -p 0 test.gb
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IF %ERRORLEVEL% NEQ 0 (
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ECHO.
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ECHO Error linking, exiting
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GOTO eof
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)
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ECHO.
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ECHO DONE
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:eof
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ECHO.
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PAUSE
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BIN
font.chr
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BIN
font.chr
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14
game/game.asm
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14
game/game.asm
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@ -0,0 +1,14 @@
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INCLUDE "game/string.asm"
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SECTION "Game Loop", ROM0
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GameLoop:
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ld b, 0
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ld c, 0
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ld hl, HelloWorldStr
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call PrintString
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.lockup
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ld a, [rLY] ; Load the current vertical line being rendered
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cp 144 ; Check if we're past VBlank (1 to 144 = carry bit set)
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jr c, .lockup ; Jump back to waitVBlank if rLY is less than 144
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jr .lockup
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25
game/string.asm
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25
game/string.asm
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@ -0,0 +1,25 @@
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SECTION "String code", ROM0
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; Print String on screen
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; @param b - PosX on where to draw text
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; @param c - PosY on where to draw text
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; @param hl - Address source string
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; @return a
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; @return b
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; @return c
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; @return de - Destination memory in map
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; @return hl = Address Target to the byte after the last byte on the target (garbage)
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PrintString:
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ld de, $9800
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.start
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ld a, [hl] ; Load the first byte in the string
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inc hl ; Increment immediately to next space
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ld [dei], a
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and a
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jr nz, .start
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ret
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.render
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.finish
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inc b
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cp b, 14
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838
hardware.inc
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838
hardware.inc
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@ -0,0 +1,838 @@
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;*
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;* Gameboy Hardware definitions
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;*
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;* Based on Jones' hardware.inc
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;* And based on Carsten Sorensen's ideas.
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;*
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;* Rev 1.1 - 15-Jul-97 : Added define check
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;* Rev 1.2 - 18-Jul-97 : Added revision check macro
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;* Rev 1.3 - 19-Jul-97 : Modified for RGBASM V1.05
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;* Rev 1.4 - 27-Jul-97 : Modified for new subroutine prefixes
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;* Rev 1.5 - 15-Aug-97 : Added _HRAM, PAD, CART defines
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;* : and Nintendo Logo
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;* Rev 1.6 - 30-Nov-97 : Added rDIV, rTIMA, rTMA, & rTAC
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;* Rev 1.7 - 31-Jan-98 : Added _SCRN0, _SCRN1
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;* Rev 1.8 - 15-Feb-98 : Added rSB, rSC
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;* Rev 1.9 - 16-Feb-98 : Converted I/O registers to $FFXX format
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;* Rev 2.0 - : Added GBC registers
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;* Rev 2.1 - : Added MBC5 & cart RAM enable/disable defines
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;* Rev 2.2 - : Fixed NR42,NR43, & NR44 equates
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;* Rev 2.3 - : Fixed incorrect _HRAM equate
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;* Rev 2.4 - 27-Apr-13 : Added some cart defines (AntonioND)
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;* Rev 2.5 - 03-May-15 : Fixed format (AntonioND)
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;* Rev 2.6 - 09-Apr-16 : Added GBC OAM and cart defines (AntonioND)
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;* Rev 2.7 - 19-Jan-19 : Added rPCMXX (ISSOtm)
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;* Rev 2.8 - 03-Feb-19 : Added audio registers flags (Álvaro Cuesta)
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; If all of these are already defined, don't do it again.
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IF !DEF(HARDWARE_INC)
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HARDWARE_INC SET 1
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rev_Check_hardware_inc : MACRO
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;NOTE: REVISION NUMBER CHANGES MUST BE ADDED
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;TO SECOND PARAMETER IN FOLLOWING LINE.
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IF \1 > 2.8 ;PUT REVISION NUMBER HERE
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WARN "Version \1 or later of 'hardware.inc' is required."
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ENDC
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ENDM
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_HW EQU $FF00
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_VRAM EQU $8000 ; $8000->$9FFF
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_SCRN0 EQU $9800 ; $9800->$9BFF
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_SCRN1 EQU $9C00 ; $9C00->$9FFF
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_SRAM EQU $A000 ; $A000->$BFFF
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_RAM EQU $C000 ; $C000->$DFFF
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_OAMRAM EQU $FE00 ; $FE00->$FE9F
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_AUD3WAVERAM EQU $FF30 ; $FF30->$FF3F
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_HRAM EQU $FF80 ; $FF80->$FFFE
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; *** MBC5 Equates ***
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rRAMG EQU $0000 ; $0000->$1fff
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rROMB0 EQU $2000 ; $2000->$2fff
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rROMB1 EQU $3000 ; $3000->$3fff - If more than 256 ROM banks are present.
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rRAMB EQU $4000 ; $4000->$5fff - Bit 3 enables rumble (if present)
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; --
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; -- OAM flags
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; --
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OAMF_PRI EQU %10000000 ; Priority
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OAMF_YFLIP EQU %01000000 ; Y flip
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OAMF_XFLIP EQU %00100000 ; X flip
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OAMF_PAL0 EQU %00000000 ; Palette number; 0,1 (DMG)
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OAMF_PAL1 EQU %00010000 ; Palette number; 0,1 (DMG)
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OAMF_BANK0 EQU %00000000 ; Bank number; 0,1 (GBC)
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OAMF_BANK1 EQU %00001000 ; Bank number; 0,1 (GBC)
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OAMF_PALMASK EQU %00000111 ; Palette (GBC)
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OAMB_PRI EQU 7 ; Priority
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OAMB_YFLIP EQU 6 ; Y flip
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OAMB_XFLIP EQU 5 ; X flip
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OAMB_PAL1 EQU 4 ; Palette number; 0,1 (DMG)
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OAMB_BANK1 EQU 3 ; Bank number; 0,1 (GBC)
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;***************************************************************************
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;*
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;* Custom registers
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;*
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;***************************************************************************
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; --
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; -- P1 ($FF00)
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; -- Register for reading joy pad info. (R/W)
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; --
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rP1 EQU $FF00
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P1F_5 EQU %00100000 ; P15 out port
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P1F_4 EQU %00010000 ; P14 out port
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P1F_3 EQU %00001000 ; P13 in port
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P1F_2 EQU %00000100 ; P12 in port
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P1F_1 EQU %00000010 ; P11 in port
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P1F_0 EQU %00000001 ; P10 in port
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; --
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; -- SB ($FF01)
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; -- Serial Transfer Data (R/W)
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; --
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rSB EQU $FF01
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; --
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; -- SC ($FF02)
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; -- Serial I/O Control (R/W)
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; --
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rSC EQU $FF02
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; --
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; -- DIV ($FF04)
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; -- Divider register (R/W)
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; --
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rDIV EQU $FF04
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; --
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; -- TIMA ($FF05)
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; -- Timer counter (R/W)
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; --
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rTIMA EQU $FF05
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; --
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; -- TMA ($FF06)
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; -- Timer modulo (R/W)
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; --
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rTMA EQU $FF06
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; --
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; -- TAC ($FF07)
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; -- Timer control (R/W)
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; --
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rTAC EQU $FF07
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TACF_START EQU %00000100
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TACF_STOP EQU %00000000
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TACF_4KHZ EQU %00000000
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TACF_16KHZ EQU %00000011
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TACF_65KHZ EQU %00000010
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TACF_262KHZ EQU %00000001
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; --
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; -- IF ($FF0F)
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; -- Interrupt Flag (R/W)
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; --
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rIF EQU $FF0F
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; --
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; -- LCDC ($FF40)
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; -- LCD Control (R/W)
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; --
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rLCDC EQU $FF40
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LCDCF_OFF EQU %00000000 ; LCD Control Operation
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LCDCF_ON EQU %10000000 ; LCD Control Operation
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LCDCF_WIN9800 EQU %00000000 ; Window Tile Map Display Select
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LCDCF_WIN9C00 EQU %01000000 ; Window Tile Map Display Select
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LCDCF_WINOFF EQU %00000000 ; Window Display
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LCDCF_WINON EQU %00100000 ; Window Display
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LCDCF_BG8800 EQU %00000000 ; BG & Window Tile Data Select
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LCDCF_BG8000 EQU %00010000 ; BG & Window Tile Data Select
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LCDCF_BG9800 EQU %00000000 ; BG Tile Map Display Select
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LCDCF_BG9C00 EQU %00001000 ; BG Tile Map Display Select
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LCDCF_OBJ8 EQU %00000000 ; OBJ Construction
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LCDCF_OBJ16 EQU %00000100 ; OBJ Construction
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LCDCF_OBJOFF EQU %00000000 ; OBJ Display
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LCDCF_OBJON EQU %00000010 ; OBJ Display
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LCDCF_BGOFF EQU %00000000 ; BG Display
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LCDCF_BGON EQU %00000001 ; BG Display
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; "Window Character Data Select" follows BG
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; --
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; -- STAT ($FF41)
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; -- LCDC Status (R/W)
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; --
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rSTAT EQU $FF41
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STATF_LYC EQU %01000000 ; LYCEQULY Coincidence (Selectable)
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STATF_MODE10 EQU %00100000 ; Mode 10
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STATF_MODE01 EQU %00010000 ; Mode 01 (V-Blank)
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STATF_MODE00 EQU %00001000 ; Mode 00 (H-Blank)
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STATF_LYCF EQU %00000100 ; Coincidence Flag
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STATF_HB EQU %00000000 ; H-Blank
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STATF_VB EQU %00000001 ; V-Blank
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STATF_OAM EQU %00000010 ; OAM-RAM is used by system
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STATF_LCD EQU %00000011 ; Both OAM and VRAM used by system
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STATF_BUSY EQU %00000010 ; When set, VRAM access is unsafe
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; --
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; -- SCY ($FF42)
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; -- Scroll Y (R/W)
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; --
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rSCY EQU $FF42
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; --
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; -- SCY ($FF43)
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; -- Scroll X (R/W)
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; --
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rSCX EQU $FF43
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; --
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; -- LY ($FF44)
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; -- LCDC Y-Coordinate (R)
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; --
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; -- Values range from 0->153. 144->153 is the VBlank period.
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; --
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rLY EQU $FF44
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; --
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; -- LYC ($FF45)
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; -- LY Compare (R/W)
|
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; --
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; -- When LYEQUEQULYC, STATF_LYCF will be set in STAT
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; --
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rLYC EQU $FF45
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; --
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; -- DMA ($FF46)
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; -- DMA Transfer and Start Address (W)
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; --
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rDMA EQU $FF46
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; --
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; -- BGP ($FF47)
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; -- BG Palette Data (W)
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; --
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; -- Bit 7-6 - Intensity for %11
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; -- Bit 5-4 - Intensity for %10
|
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; -- Bit 3-2 - Intensity for %01
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; -- Bit 1-0 - Intensity for %00
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; --
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rBGP EQU $FF47
|
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|
||||
|
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; --
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; -- OBP0 ($FF48)
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; -- Object Palette 0 Data (W)
|
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; --
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; -- See BGP for info
|
||||
; --
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rOBP0 EQU $FF48
|
||||
|
||||
|
||||
; --
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||||
; -- OBP1 ($FF49)
|
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; -- Object Palette 1 Data (W)
|
||||
; --
|
||||
; -- See BGP for info
|
||||
; --
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||||
rOBP1 EQU $FF49
|
||||
|
||||
|
||||
; --
|
||||
; -- WY ($FF4A)
|
||||
; -- Window Y Position (R/W)
|
||||
; --
|
||||
; -- 0 <EQU WY <EQU 143
|
||||
; --
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||||
rWY EQU $FF4A
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||||
|
||||
|
||||
; --
|
||||
; -- WX ($FF4B)
|
||||
; -- Window X Position (R/W)
|
||||
; --
|
||||
; -- 7 <EQU WX <EQU 166
|
||||
; --
|
||||
rWX EQU $FF4B
|
||||
|
||||
|
||||
; --
|
||||
; -- KEY 1 ($FF4D)
|
||||
; -- Select CPU Speed (R/W)
|
||||
; --
|
||||
rKEY1 EQU $FF4D
|
||||
|
||||
|
||||
; --
|
||||
; -- VBK ($FF4F)
|
||||
; -- Select Video RAM Bank (R/W)
|
||||
; --
|
||||
rVBK EQU $FF4F
|
||||
|
||||
|
||||
; --
|
||||
; -- HDMA1 ($FF51)
|
||||
; -- Horizontal Blanking, General Purpose DMA (W)
|
||||
; --
|
||||
rHDMA1 EQU $FF51
|
||||
|
||||
|
||||
; --
|
||||
; -- HDMA2 ($FF52)
|
||||
; -- Horizontal Blanking, General Purpose DMA (W)
|
||||
; --
|
||||
rHDMA2 EQU $FF52
|
||||
|
||||
|
||||
; --
|
||||
; -- HDMA3 ($FF53)
|
||||
; -- Horizontal Blanking, General Purpose DMA (W)
|
||||
; --
|
||||
rHDMA3 EQU $FF53
|
||||
|
||||
|
||||
; --
|
||||
; -- HDMA4 ($FF54)
|
||||
; -- Horizontal Blanking, General Purpose DMA (W)
|
||||
; --
|
||||
rHDMA4 EQU $FF54
|
||||
|
||||
|
||||
; --
|
||||
; -- HDMA5 ($FF55)
|
||||
; -- Horizontal Blanking, General Purpose DMA (R/W)
|
||||
; --
|
||||
rHDMA5 EQU $FF55
|
||||
|
||||
|
||||
; --
|
||||
; -- RP ($FF56)
|
||||
; -- Infrared Communications Port (R/W)
|
||||
; --
|
||||
rRP EQU $FF56
|
||||
|
||||
|
||||
; --
|
||||
; -- BCPS ($FF68)
|
||||
; -- Background Color Palette Specification (R/W)
|
||||
; --
|
||||
rBCPS EQU $FF68
|
||||
|
||||
|
||||
; --
|
||||
; -- BCPD ($FF69)
|
||||
; -- Background Color Palette Data (R/W)
|
||||
; --
|
||||
rBCPD EQU $FF69
|
||||
|
||||
|
||||
; --
|
||||
; -- BCPS ($FF6A)
|
||||
; -- Object Color Palette Specification (R/W)
|
||||
; --
|
||||
rOCPS EQU $FF6A
|
||||
|
||||
|
||||
; --
|
||||
; -- BCPD ($FF6B)
|
||||
; -- Object Color Palette Data (R/W)
|
||||
; --
|
||||
rOCPD EQU $FF6B
|
||||
|
||||
|
||||
; --
|
||||
; -- SVBK ($FF4F)
|
||||
; -- Select Main RAM Bank (R/W)
|
||||
; --
|
||||
rSVBK EQU $FF70
|
||||
|
||||
|
||||
; --
|
||||
; -- IE ($FFFF)
|
||||
; -- Interrupt Enable (R/W)
|
||||
; --
|
||||
rIE EQU $FFFF
|
||||
|
||||
|
||||
IEF_HILO EQU %00010000 ; Transition from High to Low of Pin number P10-P13
|
||||
IEF_SERIAL EQU %00001000 ; Serial I/O transfer end
|
||||
IEF_TIMER EQU %00000100 ; Timer Overflow
|
||||
IEF_LCDC EQU %00000010 ; LCDC (see STAT)
|
||||
IEF_VBLANK EQU %00000001 ; V-Blank
|
||||
|
||||
|
||||
|
||||
|
||||
;***************************************************************************
|
||||
;*
|
||||
;* Sound control registers
|
||||
;*
|
||||
;***************************************************************************
|
||||
|
||||
; --
|
||||
; -- AUDVOL/NR50 ($FF24)
|
||||
; -- Channel control / ON-OFF / Volume (R/W)
|
||||
; --
|
||||
; -- Bit 7 - Vin->SO2 ON/OFF (Vin??)
|
||||
; -- Bit 6-4 - SO2 output level (volume) (# 0-7)
|
||||
; -- Bit 3 - Vin->SO1 ON/OFF (Vin??)
|
||||
; -- Bit 2-0 - SO1 output level (volume) (# 0-7)
|
||||
; --
|
||||
rNR50 EQU $FF24
|
||||
rAUDVOL EQU rNR50
|
||||
|
||||
AUDVOL_VIN_LEFT EQU %10000000 ; SO2
|
||||
AUDVOL_VIN_RIGHT EQU %00001000 ; SO1
|
||||
|
||||
|
||||
; --
|
||||
; -- AUDTERM/NR51 ($FF25)
|
||||
; -- Selection of Sound output terminal (R/W)
|
||||
; --
|
||||
; -- Bit 7 - Output sound 4 to SO2 terminal
|
||||
; -- Bit 6 - Output sound 3 to SO2 terminal
|
||||
; -- Bit 5 - Output sound 2 to SO2 terminal
|
||||
; -- Bit 4 - Output sound 1 to SO2 terminal
|
||||
; -- Bit 3 - Output sound 4 to SO1 terminal
|
||||
; -- Bit 2 - Output sound 3 to SO1 terminal
|
||||
; -- Bit 1 - Output sound 2 to SO1 terminal
|
||||
; -- Bit 0 - Output sound 0 to SO1 terminal
|
||||
; --
|
||||
rNR51 EQU $FF25
|
||||
rAUDTERM EQU rNR51
|
||||
|
||||
; SO2
|
||||
AUDTERM_4_LEFT EQU %10000000
|
||||
AUDTERM_3_LEFT EQU %01000000
|
||||
AUDTERM_2_LEFT EQU %00100000
|
||||
AUDTERM_1_LEFT EQU %00010000
|
||||
; SO1
|
||||
AUDTERM_4_RIGHT EQU %00001000
|
||||
AUDTERM_3_RIGHT EQU %00000100
|
||||
AUDTERM_2_RIGHT EQU %00000010
|
||||
AUDTERM_1_RIGHT EQU %00000001
|
||||
|
||||
|
||||
; --
|
||||
; -- AUDENA/NR52 ($FF26)
|
||||
; -- Sound on/off (R/W)
|
||||
; --
|
||||
; -- Bit 7 - All sound on/off (sets all audio regs to 0!)
|
||||
; -- Bit 3 - Sound 4 ON flag (doesn't work!)
|
||||
; -- Bit 2 - Sound 3 ON flag (doesn't work!)
|
||||
; -- Bit 1 - Sound 2 ON flag (doesn't work!)
|
||||
; -- Bit 0 - Sound 1 ON flag (doesn't work!)
|
||||
; --
|
||||
rNR52 EQU $FF26
|
||||
rAUDENA EQU rNR52
|
||||
|
||||
AUDENA_ON EQU %10000000
|
||||
AUDENA_OFF EQU %00000000 ; sets all audio regs to 0!
|
||||
|
||||
|
||||
;***************************************************************************
|
||||
;*
|
||||
;* SoundChannel #1 registers
|
||||
;*
|
||||
;***************************************************************************
|
||||
|
||||
; --
|
||||
; -- AUD1SWEEP/NR10 ($FF10)
|
||||
; -- Sweep register (R/W)
|
||||
; --
|
||||
; -- Bit 6-4 - Sweep Time
|
||||
; -- Bit 3 - Sweep Increase/Decrease
|
||||
; -- 0: Addition (frequency increases???)
|
||||
; -- 1: Subtraction (frequency increases???)
|
||||
; -- Bit 2-0 - Number of sweep shift (# 0-7)
|
||||
; -- Sweep Time: (n*7.8ms)
|
||||
; --
|
||||
rNR10 EQU $FF10
|
||||
rAUD1SWEEP EQU rNR10
|
||||
|
||||
AUD1SWEEP_UP EQU %00000000
|
||||
AUD1SWEEP_DOWN EQU %00001000
|
||||
|
||||
|
||||
; --
|
||||
; -- AUD1LEN/NR11 ($FF11)
|
||||
; -- Sound length/Wave pattern duty (R/W)
|
||||
; --
|
||||
; -- Bit 7-6 - Wave Pattern Duty (00:12.5% 01:25% 10:50% 11:75%)
|
||||
; -- Bit 5-0 - Sound length data (# 0-63)
|
||||
; --
|
||||
rNR11 EQU $FF11
|
||||
rAUD1LEN EQU rNR11
|
||||
|
||||
|
||||
; --
|
||||
; -- AUD1ENV/NR12 ($FF12)
|
||||
; -- Envelope (R/W)
|
||||
; --
|
||||
; -- Bit 7-4 - Initial value of envelope
|
||||
; -- Bit 3 - Envelope UP/DOWN
|
||||
; -- 0: Decrease
|
||||
; -- 1: Range of increase
|
||||
; -- Bit 2-0 - Number of envelope sweep (# 0-7)
|
||||
; --
|
||||
rNR12 EQU $FF12
|
||||
rAUD1ENV EQU rNR12
|
||||
|
||||
|
||||
; --
|
||||
; -- AUD1LOW/NR13 ($FF13)
|
||||
; -- Frequency lo (W)
|
||||
; --
|
||||
rNR13 EQU $FF13
|
||||
rAUD1LOW EQU rNR13
|
||||
|
||||
|
||||
; --
|
||||
; -- AUD1HIGH/NR14 ($FF14)
|
||||
; -- Frequency hi (W)
|
||||
; --
|
||||
; -- Bit 7 - Initial (when set, sound restarts)
|
||||
; -- Bit 6 - Counter/consecutive selection
|
||||
; -- Bit 2-0 - Frequency's higher 3 bits
|
||||
; --
|
||||
rNR14 EQU $FF14
|
||||
rAUD1HIGH EQU rNR14
|
||||
|
||||
|
||||
;***************************************************************************
|
||||
;*
|
||||
;* SoundChannel #2 registers
|
||||
;*
|
||||
;***************************************************************************
|
||||
|
||||
; --
|
||||
; -- AUD2LEN/NR21 ($FF16)
|
||||
; -- Sound Length; Wave Pattern Duty (R/W)
|
||||
; --
|
||||
; -- see AUD1LEN for info
|
||||
; --
|
||||
rNR21 EQU $FF16
|
||||
rAUD2LEN EQU rNR21
|
||||
|
||||
|
||||
; --
|
||||
; -- AUD2ENV/NR22 ($FF17)
|
||||
; -- Envelope (R/W)
|
||||
; --
|
||||
; -- see AUD1ENV for info
|
||||
; --
|
||||
rNR22 EQU $FF17
|
||||
rAUD2ENV EQU rNR22
|
||||
|
||||
|
||||
; --
|
||||
; -- AUD2LOW/NR23 ($FF18)
|
||||
; -- Frequency lo (W)
|
||||
; --
|
||||
rNR23 EQU $FF18
|
||||
rAUD2LOW EQU rNR23
|
||||
|
||||
|
||||
; --
|
||||
; -- AUD2HIGH/NR24 ($FF19)
|
||||
; -- Frequency hi (W)
|
||||
; --
|
||||
; -- see AUD1HIGH for info
|
||||
; --
|
||||
rNR24 EQU $FF19
|
||||
rAUD2HIGH EQU rNR24
|
||||
|
||||
|
||||
;***************************************************************************
|
||||
;*
|
||||
;* SoundChannel #3 registers
|
||||
;*
|
||||
;***************************************************************************
|
||||
|
||||
; --
|
||||
; -- AUD3ENA/NR30 ($FF1A)
|
||||
; -- Sound on/off (R/W)
|
||||
; --
|
||||
; -- Bit 7 - Sound ON/OFF (1EQUON,0EQUOFF)
|
||||
; --
|
||||
rNR30 EQU $FF1A
|
||||
rAUD3ENA EQU rNR30
|
||||
|
||||
|
||||
; --
|
||||
; -- AUD3LEN/NR31 ($FF1B)
|
||||
; -- Sound length (R/W)
|
||||
; --
|
||||
; -- Bit 7-0 - Sound length
|
||||
; --
|
||||
rNR31 EQU $FF1B
|
||||
rAUD3LEN EQU rNR31
|
||||
|
||||
|
||||
; --
|
||||
; -- AUD3LEVEL/NR32 ($FF1C)
|
||||
; -- Select output level
|
||||
; --
|
||||
; -- Bit 6-5 - Select output level
|
||||
; -- 00: 0/1 (mute)
|
||||
; -- 01: 1/1
|
||||
; -- 10: 1/2
|
||||
; -- 11: 1/4
|
||||
; --
|
||||
rNR32 EQU $FF1C
|
||||
rAUD3LEVEL EQU rNR32
|
||||
|
||||
|
||||
; --
|
||||
; -- AUD3LOW/NR33 ($FF1D)
|
||||
; -- Frequency lo (W)
|
||||
; --
|
||||
; -- see AUD1LOW for info
|
||||
; --
|
||||
rNR33 EQU $FF1D
|
||||
rAUD3LOW EQU rNR33
|
||||
|
||||
|
||||
; --
|
||||
; -- AUD3HIGH/NR34 ($FF1E)
|
||||
; -- Frequency hi (W)
|
||||
; --
|
||||
; -- see AUD1HIGH for info
|
||||
; --
|
||||
rNR34 EQU $FF1E
|
||||
rAUD3HIGH EQU rNR34
|
||||
|
||||
|
||||
; --
|
||||
; -- AUD4LEN/NR41 ($FF20)
|
||||
; -- Sound length (R/W)
|
||||
; --
|
||||
; -- Bit 5-0 - Sound length data (# 0-63)
|
||||
; --
|
||||
rNR41 EQU $FF20
|
||||
rAUD4LEN EQU rNR41
|
||||
|
||||
|
||||
; --
|
||||
; -- AUD4ENV/NR42 ($FF21)
|
||||
; -- Envelope (R/W)
|
||||
; --
|
||||
; -- see AUD1ENV for info
|
||||
; --
|
||||
rNR42 EQU $FF21
|
||||
rAUD4ENV EQU rNR42
|
||||
|
||||
|
||||
; --
|
||||
; -- AUD4POLY/NR43 ($FF22)
|
||||
; -- Polynomial counter (R/W)
|
||||
; --
|
||||
; -- Bit 7-4 - Selection of the shift clock frequency of the (scf)
|
||||
; -- polynomial counter (0000-1101)
|
||||
; -- freqEQUdrf*1/2^scf (not sure)
|
||||
; -- Bit 3 - Selection of the polynomial counter's step
|
||||
; -- 0: 15 steps
|
||||
; -- 1: 7 steps
|
||||
; -- Bit 2-0 - Selection of the dividing ratio of frequencies (drf)
|
||||
; -- 000: f/4 001: f/8 010: f/16 011: f/24
|
||||
; -- 100: f/32 101: f/40 110: f/48 111: f/56 (fEQU4.194304 Mhz)
|
||||
; --
|
||||
rNR43 EQU $FF22
|
||||
rAUD4POLY EQU rNR43
|
||||
|
||||
|
||||
; --
|
||||
; -- AUD4GO/NR44 ($FF23)
|
||||
; -- (has wrong name and value (ff30) in Dr.Pan's doc!)
|
||||
; --
|
||||
; -- Bit 7 - Inital
|
||||
; -- Bit 6 - Counter/consecutive selection
|
||||
; --
|
||||
rNR44 EQU $FF23
|
||||
rAUD4GO EQU rNR44 ; silly name!
|
||||
|
||||
|
||||
; --
|
||||
; -- PCM12 ($FF76)
|
||||
; -- Sound channel 1&2 PCM amplitude (R)
|
||||
; --
|
||||
; -- Bit 7-4 - Copy of sound channel 2's PCM amplitude
|
||||
; -- Bit 3-0 - Copy of sound channel 1's PCM amplitude
|
||||
; --
|
||||
rPCM12 EQU $FF76
|
||||
|
||||
|
||||
; --
|
||||
; -- PCM34 ($FF77)
|
||||
; -- Sound channel 3&4 PCM amplitude (R)
|
||||
; --
|
||||
; -- Bit 7-4 - Copy of sound channel 4's PCM amplitude
|
||||
; -- Bit 3-0 - Copy of sound channel 3's PCM amplitude
|
||||
; --
|
||||
rPCM34 EQU $FF77
|
||||
|
||||
|
||||
;***************************************************************************
|
||||
;*
|
||||
;* Flags common to multiple sound channels
|
||||
;*
|
||||
;***************************************************************************
|
||||
|
||||
; --
|
||||
; -- Square wave duty cycle
|
||||
; --
|
||||
; -- Can be used with AUD1LEN and AUD2LEN
|
||||
; -- See AUD1LEN for more info
|
||||
; --
|
||||
AUDLEN_DUTY_12_5 EQU %00000000 ; 12.5%
|
||||
AUDLEN_DUTY_25 EQU %01000000 ; 25%
|
||||
AUDLEN_DUTY_50 EQU %10000000 ; 50%
|
||||
AUDLEN_DUTY_75 EQU %11000000 ; 75%
|
||||
|
||||
|
||||
; --
|
||||
; -- Audio envelope flags
|
||||
; --
|
||||
; -- Can be used with AUD1ENV, AUD2ENV, AUD4ENV
|
||||
; -- See AUD1ENV for more info
|
||||
; --
|
||||
AUDENV_UP EQU %00001000
|
||||
AUDENV_DOWN EQU %00000000
|
||||
|
||||
|
||||
; --
|
||||
; -- Audio trigger flags
|
||||
; --
|
||||
; -- Can be used with AUD1HIGH, AUD2HIGH, AUD3HIGH
|
||||
; -- See AUD1HIGH for more info
|
||||
; --
|
||||
|
||||
AUDHIGH_RESTART EQU %10000000
|
||||
AUDHIGH_LENGTH_ON EQU %01000000
|
||||
AUDHIGH_LENGTH_OFF EQU %00000000
|
||||
|
||||
|
||||
;***************************************************************************
|
||||
;*
|
||||
;* Cart related
|
||||
;*
|
||||
;***************************************************************************
|
||||
|
||||
CART_COMPATIBLE_DMG EQU $00
|
||||
CART_COMPATIBLE_DMG_GBC EQU $80
|
||||
CART_COMPATIBLE_GBC EQU $C0
|
||||
|
||||
CART_ROM EQU $00
|
||||
CART_ROM_MBC1 EQU $01
|
||||
CART_ROM_MBC1_RAM EQU $02
|
||||
CART_ROM_MBC1_RAM_BAT EQU $03
|
||||
CART_ROM_MBC2 EQU $05
|
||||
CART_ROM_MBC2_BAT EQU $06
|
||||
CART_ROM_RAM EQU $08
|
||||
CART_ROM_RAM_BAT EQU $09
|
||||
CART_ROM_MBC3_BAT_RTC EQU $0F
|
||||
CART_ROM_MBC3_RAM_BAT_RTC EQU $10
|
||||
CART_ROM_MBC3 EQU $11
|
||||
CART_ROM_MBC3_RAM EQU $12
|
||||
CART_ROM_MBC3_RAM_BAT EQU $13
|
||||
CART_ROM_MBC5 EQU $19
|
||||
CART_ROM_MBC5_BAT EQU $1A
|
||||
CART_ROM_MBC5_RAM_BAT EQU $1B
|
||||
CART_ROM_MBC5_RUMBLE EQU $1C
|
||||
CART_ROM_MBC5_RAM_RUMBLE EQU $1D
|
||||
CART_ROM_MBC5_RAM_BAT_RUMBLE EQU $1E
|
||||
CART_ROM_MBC7_RAM_BAT_GYRO EQU $22
|
||||
CART_ROM_POCKET_CAMERA EQU $FC
|
||||
|
||||
CART_ROM_256K EQU 0 ; 2 banks
|
||||
CART_ROM_512K EQU 1 ; 4 banks
|
||||
CART_ROM_1M EQU 2 ; 8 banks
|
||||
CART_ROM_2M EQU 3 ; 16 banks
|
||||
CART_ROM_4M EQU 4 ; 32 banks
|
||||
CART_ROM_8M EQU 5 ; 64 banks
|
||||
CART_ROM_16M EQU 6 ; 128 banks
|
||||
CART_ROM_32M EQU 7 ; 256 banks
|
||||
CART_ROM_64M EQU 8 ; 512 banks
|
||||
|
||||
CART_RAM_NONE EQU 0
|
||||
CART_RAM_16K EQU 1 ; 1 incomplete bank
|
||||
CART_RAM_64K EQU 2 ; 1 bank
|
||||
CART_RAM_256K EQU 3 ; 4 banks
|
||||
CART_RAM_1M EQU 4 ; 16 banks
|
||||
|
||||
CART_RAM_ENABLE EQU $0A
|
||||
CART_RAM_DISABLE EQU $00
|
||||
|
||||
;***************************************************************************
|
||||
;*
|
||||
;* Keypad related
|
||||
;*
|
||||
;***************************************************************************
|
||||
|
||||
PADF_DOWN EQU $80
|
||||
PADF_UP EQU $40
|
||||
PADF_LEFT EQU $20
|
||||
PADF_RIGHT EQU $10
|
||||
PADF_START EQU $08
|
||||
PADF_SELECT EQU $04
|
||||
PADF_B EQU $02
|
||||
PADF_A EQU $01
|
||||
|
||||
PADB_DOWN EQU $7
|
||||
PADB_UP EQU $6
|
||||
PADB_LEFT EQU $5
|
||||
PADB_RIGHT EQU $4
|
||||
PADB_START EQU $3
|
||||
PADB_SELECT EQU $2
|
||||
PADB_B EQU $1
|
||||
PADB_A EQU $0
|
||||
|
||||
;***************************************************************************
|
||||
;*
|
||||
;* Screen related
|
||||
;*
|
||||
;***************************************************************************
|
||||
|
||||
SCRN_X EQU 160 ; Width of screen in pixels
|
||||
SCRN_Y EQU 144 ; Height of screen in pixels
|
||||
SCRN_X_B EQU 20 ; Width of screen in bytes
|
||||
SCRN_Y_B EQU 18 ; Height of screen in bytes
|
||||
|
||||
SCRN_VX EQU 256 ; Virtual width of screen in pixels
|
||||
SCRN_VY EQU 256 ; Virtual height of screen in pixels
|
||||
SCRN_VX_B EQU 32 ; Virtual width of screen in bytes
|
||||
SCRN_VY_B EQU 32 ; Virtual height of screen in bytes
|
||||
|
||||
;*
|
||||
;* Nintendo scrolling logo
|
||||
;* (Code won't work on a real GameBoy)
|
||||
;* (if next lines are altered.)
|
||||
NINTENDO_LOGO : MACRO
|
||||
DB $CE,$ED,$66,$66,$CC,$0D,$00,$0B,$03,$73,$00,$83,$00,$0C,$00,$0D
|
||||
DB $00,$08,$11,$1F,$88,$89,$00,$0E,$DC,$CC,$6E,$E6,$DD,$DD,$D9,$99
|
||||
DB $BB,$BB,$67,$63,$6E,$0E,$EC,$CC,$DD,$DC,$99,$9F,$BB,$B9,$33,$3E
|
||||
ENDM
|
||||
|
||||
ENDC ;HARDWARE_INC
|
||||
75
main.asm
Normal file
75
main.asm
Normal file
|
|
@ -0,0 +1,75 @@
|
|||
INCLUDE "hardware.inc"
|
||||
INCLUDE "game/game.asm"
|
||||
INCLUDE "tools.asm"
|
||||
|
||||
SECTION "Header", ROM0[$100]
|
||||
|
||||
EntryPoint: ;
|
||||
di ; Disable interrupts. That way we can avoid dealing with them, especially since we didn't talk about them yet
|
||||
jp Start ; Leave this tiny space
|
||||
|
||||
REPT $150 - $104
|
||||
db 0
|
||||
ENDR
|
||||
|
||||
SECTION "Intro code", ROM0
|
||||
|
||||
Start:
|
||||
; First step is to access the VRAM to insert our graphics data.
|
||||
; To do so, we must wait until we are in VBLANK period.
|
||||
; Loop until we find ourselves in VBLANK
|
||||
|
||||
; Turn off the LCD
|
||||
.waitVBlank
|
||||
ld a, [rLY] ; Load the current vertical line being rendered
|
||||
cp 144 ; Check if we're past VBlank (1 to 144 = carry bit set)
|
||||
jr c, .waitVBlank ; Jump back to waitVBlank if rLY is less than 144
|
||||
|
||||
xor a ; ld a, 0 ; Reset the accumilator register
|
||||
; Our target is to set bit 7 reset on the LDC to turn it off
|
||||
ld [rLCDC], a ; We will have to write to LCDC again later, so it's not a bother, really.
|
||||
|
||||
; ----------- Font Begin copying to VRAM -----------
|
||||
; Start copying our font to vram
|
||||
ld de, FontTiles ; The start of the font tiles
|
||||
ld hl, $9000 ; Set registers hl to $9000 which is the beginning of vram
|
||||
ld bc, FontTilesEnd - FontTiles ; The total length of font tiles
|
||||
call Memcpy
|
||||
|
||||
; ----------- Begin copying string to palette -----------
|
||||
ld hl, $9800 ; This will print the string at the top-left corner of screen
|
||||
ld de, HelloWorldStr
|
||||
.copyString
|
||||
ld a, [de] ; Read the first byte in the string to accumilator
|
||||
ld [hli], a ; Write the byte from the accumilator to the destination while incrementing destination address
|
||||
inc de ; Move to next byte in string
|
||||
and a ; AND a with A, Checking if we copied a zero (end of string)
|
||||
jr nz, .copyString ; Continue copying while not zero
|
||||
|
||||
; ----------- Start the display -----------
|
||||
; Init the display register
|
||||
ld a, %11100100 ; Load the palette of white, light gray, dark gray, black
|
||||
ld a, %00011011 ; Load the palette of white, light gray, dark gray, black
|
||||
ld [rBGP], a ; Store the palette to display
|
||||
|
||||
xor a ; ld a, 0 ; Reset the accumilator
|
||||
ld [rSCY], a ; Set our scroll Y position to 0
|
||||
ld [rSCX], a ; Set our scroll X position to 0
|
||||
|
||||
ld [rNR52], a ; Turn off sound
|
||||
|
||||
; Turn the screen on, display background
|
||||
ld a, %10000001 ; screen on = 8th bit, background display = 1st bit
|
||||
ld [rLCDC], a ; Set the screen flags
|
||||
jp GameLoop
|
||||
|
||||
SECTION "Font", ROM0
|
||||
|
||||
FontTiles:
|
||||
INCBIN "font.chr"
|
||||
FontTilesEnd:
|
||||
|
||||
Section "Hello wrold string", ROM0
|
||||
|
||||
HelloWorldStr:
|
||||
db "Hello World!", 0
|
||||
BIN
main.o
Normal file
BIN
main.o
Normal file
Binary file not shown.
BIN
test.gb
Normal file
BIN
test.gb
Normal file
Binary file not shown.
BIN
test.xcf
Normal file
BIN
test.xcf
Normal file
Binary file not shown.
19
tools.asm
Normal file
19
tools.asm
Normal file
|
|
@ -0,0 +1,19 @@
|
|||
SECTION "Tools", ROM0
|
||||
|
||||
; Memory copier
|
||||
; @param de - Address source to start of data to be copied
|
||||
; @param hl - Address destomatopm where to copy the data to
|
||||
; @param bc - The total amount of bytes to copy
|
||||
; @return a = Zero
|
||||
; @return bc = Zero
|
||||
; @return de = Address Source to the byte after the last byte from source (garbage)
|
||||
; @return hl = Address Target to the byte after the last byte on the target (garbage)
|
||||
Memcpy:
|
||||
ld a, [de] ; Load the value at [de] to accumilator
|
||||
ld [hli], a ; Load the value from accumilator to the destination address and increment it by one
|
||||
inc de ; Increment de to point to next byte to copy
|
||||
dec bc ; Decrement bc the total amount of bytes to copy
|
||||
ld a, b ; Load the first half of total amount of bytes to write to accumilator
|
||||
or c ; OR together the second half of total amount with the first half
|
||||
jr nz, Memcpy ; Loop back to Memcpy if not zero
|
||||
ret
|
||||
Loading…
Reference in a new issue