Machine code: Difference between revisions
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<pre>19</pre>
<lang z80>;;;;;;;;;;;;;;;;;;; HEADER ;;;;;;;;;;;;;;;;;;;
read "\SrcCPC\winape_macros.asm"
read "\SrcCPC\MemoryMap.asm"
read "\SrcALL\winapeBuildCompat.asm"
read "\SrcALL\lib\z80_opcode_chart.asm"
;;;;;;;;;;;;;;;;;;; PROGRAM ;;;;;;;;;;;;;;;;;;;
org &1000
ld hl,machine_code_area
;assembles the following:
;LD A,7
;ADD 12
;DAA
;CALL SHOWHEX
;RET
ld (hl),&3E ;LD A,nn
inc hl
ld (hl),7
inc hl
ld (hl),&C6 ;ADD nn
inc hl
ld (hl),12
inc hl
ld (hl),&27 ;DAA
inc hl
ld (hl),&CD ;call
inc hl
ld (hl),&00 ;low byte of address of showhex
inc hl
ld (hl),&11 ;high byte of address of showhex
inc hl
ld (hl),&C9 ;RET
;FALLTHROUGH IS INTENTIONAL
machine_code_area:
;0 = nop
byte 0,0,0,0,0,0,0,0
byte 0,0,0,0,0,0,0,0
byte 0,0,0,0,0,0,0,0
byte 0,0,0,0,0,0,0,0
byte 0,0,0,0,0,0,0,0
byte 0,0,0,0,0,0,0,0
byte 0,0,0,0,0,0,0,0
byte 0,0,0,0,0,0,0,0
org &1100
read "\SrcCPC\winape_showhex.asm" ;showhex is at &1100 thanks to the org.
read "\SrcCPC\winape_stringop.asm"</lang>
If you were doing this for real, it's much better to define the opcodes as labels so that you don't need to memorize them. (I really wish assemblers let you use instruction names as aliases for data, but I imagine that would make parsing much more difficult. Oh well.)
{{omit from|360 Assembly}}
{{omit from|8080 Assembly}}
{{omit from|8086 Assembly}}
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{{omit from|MIPS Assembly}}
{{omit from|x86 Assembly}}
▲{{omit from|Z80 Assembly}}
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