Difference between revisions of "84PCE:Syscalls:0210E0"
From WikiTI
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| − | [[Category:84PCE:Syscalls: | + | [[Category:84PCE:Syscalls:By Name:Memory|MemSet]] |
| − | [[Category:84PCE:Syscalls: | + | [[Category:84PCE:Syscalls:By Name|MemSet]] |
| − | [[Category:84PCE:Syscalls: | + | [[Category:84PCE:Syscalls:By Address|0210E0 - MemSet]] |
== Synopsis == | == Synopsis == | ||
Revision as of 10:21, 26 May 2015
Synopsis
Official Name: MemSet
Syscall Address: 0210E0h
Sets a block of memory to the value in A.
Inputs
- HL: Address of memory block.
- BC: Number of bytes to zero.
- A: Value to set memory block to.
Outputs
- DE: Points to byte after memory block.
Destroys
- AF, BC, HL
Comments
This routine uses an LDIR instruction to clear the memory block, so do not pass it a block length of 0 or 1 or it will erase 16777216 bytes.
See also: MemClear
Example
;Clear out pixelShadow with spaces
ld a,' '
ld hl,pixelShadow
ld bc,8400
call _MemSet
