diff options
Diffstat (limited to 'source')
| -rw-r--r-- | source/bank_00.asm | 48 |
1 files changed, 44 insertions, 4 deletions
diff --git a/source/bank_00.asm b/source/bank_00.asm index 05c1d18..68ea071 100644 --- a/source/bank_00.asm +++ b/source/bank_00.asm @@ -1247,7 +1247,7 @@ function_00_0d91:: pop af ret -SECTION "mem_clear", ROM0[$0f38] +SECTION "mem functions", ROM0[$0f38] ; Zeroes out RAM ; Parameters: ; hl - dest @@ -1261,14 +1261,54 @@ mem_clear:: jr nz, mem_clear ret -SECTION "copy functions", ROM0[$0f69] +; Zeroes out RAM +; Parameters: +; hl - dest +; bc - length +function_00_0f40:: + ldh a, [rLCDC] + bit LCDCF_ON_F, a + jr z, .hblank_enter +.hblank_finish + ldh a, [rSTAT] + and STATF_LCD + jr z, .hblank_finish +.hblank_enter + ldh a, [rSTAT] + and STATF_LCD + jr nz, .hblank_enter + xor a +rept 4 + ld [hl+], a +endr +rept 4 + dec bc +endr + ld a, b + or c + jr nz, function_00_0f40 + ret ; Parameters: -; a - bank ; hl - source ; de - dest ; bc - length mem_copy:: + ld a, [hl+] + ld [de], a + inc de + dec bc + ld a, c + or b + jr nz, mem_copy + ret + +; Parameters: +; a - bank +; hl - source +; de - dest +; bc - length +far_mem_copy:: ld [w_bank_temp], a ld a, [w_bank_rom] push af @@ -1295,7 +1335,7 @@ mem_copy:: ; hl - source ; de - dest ; bc - length -mem_mask:: +far_mem_mask:: ld [w_bank_temp], a ld a, [w_bank_rom] push af |