diff options
| author | PikalaxALT <pikalaxalt@gmail.com> | 2018-06-06 16:11:16 -0400 |
|---|---|---|
| committer | PikalaxALT <pikalaxalt@gmail.com> | 2018-06-06 16:11:16 -0400 |
| commit | 884e0f67f8cd0151784c90fa18682ef45cd3bf6a (patch) | |
| tree | 0c6750172578aa3e8230a7a34b4aca5e4ac07a98 | |
| parent | bad561848af1a20143ac290a92ecdfb9748a14e0 (diff) | |
Disassemble home calls to Multiply and Divide
| -rw-r--r-- | home/print_text.asm | 21 | ||||
| -rw-r--r-- | home/util.asm | 53 | ||||
| -rw-r--r-- | macros/farcall.asm | 2 | ||||
| -rw-r--r-- | shim.sym | 2 |
4 files changed, 73 insertions, 5 deletions
diff --git a/home/print_text.asm b/home/print_text.asm index e8b4eeb..0a17688 100644 --- a/home/print_text.asm +++ b/home/print_text.asm @@ -48,4 +48,23 @@ PrintLetterDelay:: ; 33a3 (0:33a3) pop de pop hl ret -; 0x33e3
\ No newline at end of file +; 0x33e3 + +CopyDataUntil:: ; 33e3 +; Copy [hl .. bc) to de. + +; In other words, the source data is +; from hl up to but not including bc, +; and the destination is de. + +.asm_33e3: ; 00:33e3 + ld a, [hli] + ld [de], a + inc de + ld a, h + cp b + jr nz, .asm_33e3 + ld a, l + cp c + jr nz, .asm_33e3 + ret diff --git a/home/util.asm b/home/util.asm index 6591da2..8efe322 100644 --- a/home/util.asm +++ b/home/util.asm @@ -1,12 +1,59 @@ INCLUDE "constants.asm" if DEBUG -SECTION "Misc Utility Functions", ROM0[$341F] +SECTION "Misc Utility Functions", ROM0[$33EF] else -SECTION "Misc Utility Functions", ROM0[$33E3] +SECTION "Misc Utility Functions", ROM0[$33B3] endc -_341F:: ; 341f +Function33ef:: + ; hl = src + ; de = dest + ; b = y + ; c = x + push hl + push de + push bc + ld a, b + dec a + dec a + ld b, $0 +.asm_33f7: ; 00:33f7 + add hl, bc + dec a + jr nz, .asm_33f7 + pop bc + dec b + ld a, b + push hl + add hl, bc + ld d, h + ld e, l + pop hl +.asm_3403: ; 00:3403 + push af + push bc + call CopyBytes + pop bc + push bc + ld a, c + xor $ff + ld c, a + ld b, $ff + inc bc + add hl, bc + ld d, h + ld e, l + add hl, bc + pop bc + pop af + dec a + jr nz, .asm_3403 + pop hl + pop de + jp CopyBytes + +SkipNames:: ; 341f ; Returns hl + a * 6 and a ret z diff --git a/macros/farcall.asm b/macros/farcall.asm index 05bb7b1..5e39410 100644 --- a/macros/farcall.asm +++ b/macros/farcall.asm @@ -12,7 +12,7 @@ callab: MACRO ; address, bank ENDM homecall: MACRO - ld a, [hROMBank] + ldh a, [hROMBank] push af ld a, BANK(\1) call Bankswitch @@ -57,6 +57,8 @@ 01:6445 Function6445 01:66B1 Function66b1 01:6713 Function6713 +01:6810 _Multiply +01:6870 _Divide 01:68F3 ItemAttributes 02:4000 Function8000 |