62 lines
1.3 KiB
NASM
62 lines
1.3 KiB
NASM
; DMGTRIS
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; Copyright (C) 2023 - Randy Thiemann <randy.thiemann@gmail.com>
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; This program is free software: you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation, either version 3 of the License, or
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; (at your option) any later version.
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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; You should have received a copy of the GNU General Public License
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; along with this program. If not, see <https://www.gnu.org/licenses/>.
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IF !DEF(MEMORY_ASM)
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DEF MEMORY_ASM EQU 1
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INCLUDE "globals.asm"
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SECTION "Memory Functions", ROM0
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; Copies data from de to hl, bc bytes
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UnsafeMemCopy::
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ld a, [de]
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ld [hl+], a
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inc de
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dec bc
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ld a, b
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or a, c
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jr nz, UnsafeMemCopy
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ret
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; Copies data from de to hl, bc bytes
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SafeMemCopy::
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wait_vram
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ld a, [de]
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ld [hl+], a
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inc de
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dec bc
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ld a, b
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or a, c
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jr nz, SafeMemCopy
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ret
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; Sets memory from hl to hl+bc to d
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UnsafeMemSet::
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ld [hl], d
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inc hl
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dec bc
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ld a, b
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or a, c
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jr nz, UnsafeMemSet
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ret
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ENDC
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