diff options
| -rw-r--r-- | home.asm | 112 | ||||
| -rw-r--r-- | home/clear_sprites.asm | 21 | ||||
| -rw-r--r-- | home/header.asm | 57 | ||||
| -rw-r--r-- | home/lcd.asm | 25 | ||||
| -rw-r--r-- | home/start.asm | 10 | ||||
| -rw-r--r-- | layout.link | 100 |
6 files changed, 138 insertions, 187 deletions
@@ -1,118 +1,22 @@ INCLUDE "constants.asm" -; The rst vectors are unused. -SECTION "rst 00", ROM0 - rst $38 -SECTION "rst 08", ROM0 - rst $38 -SECTION "rst 10", ROM0 - rst $38 -SECTION "rst 18", ROM0 - rst $38 -SECTION "rst 20", ROM0 - rst $38 -SECTION "rst 28", ROM0 - rst $38 -SECTION "rst 30", ROM0 - rst $38 -SECTION "rst 38", ROM0 - rst $38 - -; Hardware interrupts -SECTION "vblank", ROM0 - jp VBlank -SECTION "hblank", ROM0 - rst $38 -SECTION "timer", ROM0 - jp Timer -SECTION "serial", ROM0 - jp Serial -SECTION "joypad", ROM0 - reti +SECTION "NULL", ROM0 +NULL:: +INCLUDE "home/header.asm" -SECTION "Home", ROM0 - -DisableLCD:: - xor a - ld [rIF], a - ld a, [rIE] - ld b, a - res 0, a - ld [rIE], a - -.wait - ld a, [rLY] - cp LY_VBLANK - jr nz, .wait - - ld a, [rLCDC] - and $ff ^ rLCDC_ENABLE_MASK - ld [rLCDC], a - ld a, b - ld [rIE], a - ret - -EnableLCD:: - ld a, [rLCDC] - set rLCDC_ENABLE, a - ld [rLCDC], a - ret - -ClearSprites:: - xor a - ld hl, wOAMBuffer - ld b, 40 * 4 -.loop - ld [hli], a - dec b - jr nz, .loop - ret -HideSprites:: - ld a, 160 - ld hl, wOAMBuffer - ld de, 4 - ld b, 40 -.loop - ld [hl], a - add hl, de - dec b - jr nz, .loop - ret +SECTION "High Home", ROM0 +INCLUDE "home/lcd.asm" +INCLUDE "home/clear_sprites.asm" INCLUDE "home/copy.asm" -SECTION "Entry", ROM0 - - nop - jp Start - - -SECTION "Header", ROM0 - - ; The header is generated by rgbfix. - ; The space here is allocated to prevent code from being overwritten. - - ds $150 - $104 - - -SECTION "Main", ROM0 - -Start:: - cp GBC - jr z, .gbc - xor a - jr .ok -.gbc - ld a, 0 -.ok - ld [wGBC], a - jp Init - +SECTION "Home", ROM0 +INCLUDE "home/start.asm" INCLUDE "home/joypad.asm" INCLUDE "data/maps/map_header_pointers.asm" INCLUDE "home/overworld.asm" diff --git a/home/clear_sprites.asm b/home/clear_sprites.asm new file mode 100644 index 00000000..34f4b4ec --- /dev/null +++ b/home/clear_sprites.asm @@ -0,0 +1,21 @@ +ClearSprites:: + xor a + ld hl, wOAMBuffer + ld b, 40 * 4 +.loop + ld [hli], a + dec b + jr nz, .loop + ret + +HideSprites:: + ld a, 160 + ld hl, wOAMBuffer + ld de, 4 + ld b, 40 +.loop + ld [hl], a + add hl, de + dec b + jr nz, .loop + ret diff --git a/home/header.asm b/home/header.asm new file mode 100644 index 00000000..047f97f4 --- /dev/null +++ b/home/header.asm @@ -0,0 +1,57 @@ +; rst vectors (unused) + +SECTION "rst0", ROM0[$0000] + rst $38 + +SECTION "rst8", ROM0[$0008] + rst $38 + +SECTION "rst10", ROM0[$0010] + rst $38 + +SECTION "rst18", ROM0[$0018] + rst $38 + +SECTION "rst20", ROM0[$0020] + rst $38 + +SECTION "rst28", ROM0[$0028] + rst $38 + +SECTION "rst30", ROM0[$0030] + rst $38 + +SECTION "rst38", ROM0[$0038] + rst $38 + + +; Game Boy hardware interrupts + +SECTION "vblank", ROM0[$0040] + jp VBlank + +SECTION "lcd", ROM0[$0048] + rst $38 + +SECTION "timer", ROM0[$0050] + jp Timer + +SECTION "serial", ROM0[$0058] + jp Serial + +SECTION "joypad", ROM0[$0060] + reti + + +SECTION "Header", ROM0[$0100] + +Start:: +; Nintendo requires all Game Boy ROMs to begin with a nop ($00) and a jp ($C3) +; to the starting address. + nop + jp _Start + +; The Game Boy cartridge header data is patched over by rgbfix. +; This makes sure it doesn't get used for anything else. + + ds $0150 - @, $00 diff --git a/home/lcd.asm b/home/lcd.asm new file mode 100644 index 00000000..e88a42b3 --- /dev/null +++ b/home/lcd.asm @@ -0,0 +1,25 @@ +DisableLCD:: + xor a + ld [rIF], a + ld a, [rIE] + ld b, a + res 0, a + ld [rIE], a + +.wait + ld a, [rLY] + cp LY_VBLANK + jr nz, .wait + + ld a, [rLCDC] + and $ff ^ rLCDC_ENABLE_MASK + ld [rLCDC], a + ld a, b + ld [rIE], a + ret + +EnableLCD:: + ld a, [rLCDC] + set rLCDC_ENABLE, a + ld [rLCDC], a + ret diff --git a/home/start.asm b/home/start.asm new file mode 100644 index 00000000..448b6362 --- /dev/null +++ b/home/start.asm @@ -0,0 +1,10 @@ +_Start:: + cp GBC + jr z, .gbc + xor a + jr .ok +.gbc + ld a, 0 +.ok + ld [wGBC], a + jp Init diff --git a/layout.link b/layout.link index 6391c9d5..d4473435 100644 --- a/layout.link +++ b/layout.link @@ -1,59 +1,43 @@ ROM0 org $0000 - "rst 00" - + "NULL" + org $0000 + "rst0" org $0008 - "rst 08" - + "rst8" org $0010 - "rst 10" - + "rst10" org $0018 - "rst 18" - + "rst18" org $0020 - "rst 20" - + "rst20" org $0028 - "rst 28" - + "rst28" org $0030 - "rst 30" - + "rst30" org $0038 - "rst 38" - + "rst38" org $0040 "vblank" - org $0048 - "hblank" - + "lcd" org $0050 "timer" - org $0058 "serial" - org $0060 "joypad" ; $0061 - "Home" - + "High Home" org $100 - "Entry" - ; $0104 "Header" - org $150 - "Main" + "Home" ROMX $1 - org $4000 "bank1" ROMX $2 - org $4000 "Sound Effect Headers 1" "Music Headers 1" "Sound Effects 1" @@ -61,36 +45,30 @@ ROMX $2 "Music 1" ROMX $3 - org $4000 "bank3" ROMX $4 - org $4000 "NPC Sprites 1" "Graphics (BANK 4)" "Battle (BANK 4)" ROMX $5 - org $4000 "NPC Sprites 2" "Battle (BANK 5)" ROMX $6 - org $4000 "Maps 1" "bank6_1" "Maps 2" "bank6_2" ROMX $7 - org $4000 "Maps 3" "bank7_1" "Maps 4" "bank7_2" ROMX $8 - org $4000 "Sound Effect Headers 2" "Music Headers 2" "Sound Effects 2" @@ -100,113 +78,92 @@ ROMX $8 "Music 2" ROMX $9 - org $4000 "Pics 1" "Battle (BANK 9)" ROMX $A - org $4000 "Pics 2" "Battle (BANK A)" ROMX $B - org $4000 "Pics 3" "Battle (BANK B)" ROMX $C - org $4000 "Pics 4" "Battle (BANK C)" ROMX $D - org $4000 "Pics 5" "Battle (BANK D)" ROMX $E - org $4000 "bankE" ROMX $F - org $4000 "bankF" ROMX $10 - org $4000 "bank10" ROMX $11 - org $4000 "Maps 5" "bank11_1" "Maps 6" "bank11_2" ROMX $12 - org $4000 "Maps 7" "bank12" "Maps 8" ROMX $13 - org $4000 "Pics 6" "Maps 9" "bank13" ROMX $14 - org $4000 "Maps 10" "bank14" ROMX $15 - org $4000 "Maps 11" "bank15_1" "Maps 12" "bank15_2" ROMX $16 - org $4000 "Maps 13" "bank16_1" "Maps 14" "bank16_2" ROMX $17 - org $4000 "Maps 15" "bank17_1" "Maps 16" "bank17_2" ROMX $18 - org $4000 "Maps 17" "bank18_1" "Maps 18" "bank18_2" ROMX $19 - org $4000 "Tilesets 1" ROMX $1A - org $4000 "bank1A" "Tilesets 2" ROMX $1B - org $4000 "Tilesets 3" ROMX $1C - org $4000 "bank1C" ROMX $1D - org $4000 "Maps 19" "bank1D_1" "Maps 20" @@ -215,11 +172,9 @@ ROMX $1D "bank1D_3" ROMX $1E - org $4000 "bank1E" ROMX $1F - org $4000 "Sound Effect Headers 3" "Music Headers 3" "Sound Effects 3" @@ -227,81 +182,60 @@ ROMX $1F "Music 3" ROMX $20 - org $4000 "Text 1" ROMX $21 - org $4000 "Text 2" ROMX $22 - org $4000 "Text 3" ROMX $23 - org $4000 "Text 4" ROMX $24 - org $4000 "Text 5" ROMX $25 - org $4000 "Text 6" ROMX $26 - org $4000 "Text 7" ROMX $27 - org $4000 "Text 8" ROMX $28 - org $4000 "Text 9" ROMX $29 - org $4000 "Text 10" ROMX $2A - org $4000 "Text 11" ROMX $2B - org $4000 "Pokedex Text" ROMX $2C - org $4000 "Move Names" WRAM0 - org $c000 "WRAM Bank 0" - org $c100 "Sprite State Data" "OAM Buffer" - org $dfff "Stack" -SRAM 0 - org $a000 +SRAM $0 "Sprite Buffers" -SRAM 1 - org $a000 +SRAM $1 "Save Data" -SRAM 2 - org $a000 +SRAM $2 "Saved Boxes 1" -SRAM 3 - org $a000 +SRAM $3 "Saved Boxes 2" - |