Instruction set - redcode/Z80 GitHub Wiki

8-bit load group

`ld J,K`

Description

The contents of any register K are loaded to any other register J.

`ld O,P`

`ld J,BYTE`

Description

The 8-bit immediate integer BYTE is loaded to any register J.

`ld O,BYTE`

`ld J,(hl)`

`ld J,(XY+OFFSET)`

`ld (hl),K`

`ld (XY+OFFSET),K`

`ld (hl),BYTE`

`ld (XY+OFFSET),BYTE`

`ld a,(bc)`

`ld a,(de)`

`ld a,(WORD)`

`ld (bc),a`

`ld (de),a`

`ld (WORD),a`

`ld a,i`

`ld a,r`

`ld i,a`

`ld r,a`

16-bit load group

`ld SS,WORD`

`ld XY,WORD`

`ld hl,(WORD)`

`ld SS,(WORD)`

`ld XY,(WORD)`

`ld (WORD),hl`

`ld (WORD),SS`

`ld (WORD),XY`

`ld sp,hl`

`ld sp,XY`

`push TT`

`push XY`

`pop TT`

`pop XY`

Exchange, block transfer and search groups

`ex de,hl`

`ex af,af'`

`exx`

`ex (sp),hl`

`ex (sp),XY`

`ldi`

`ldir`

`ldd`

`lddr`

`cpi`

`cpir`

`cpd`

`cpdr`

8-bit arithmetic and logical group

`U [a,]K`

`U [a,]P`

`U [a,]BYTE`

`U [a,](hl)`

`U [a,](XY+OFFSET)`

`V J`

`V O`

`V (hl)`

`V (XY+OFFSET)`

General-purpose arithmetic and CPU control groups

`daa`

`cpl`

`neg`

`ccf`

`scf`

`nop`

`halt`

`di`

`ei`

`im 0`

`im 1`

`im 2`

16-bit arithmetic group

`add hl,SS`

`adc hl,SS`

`sbc hl,SS`

`add XY,WW`

`inc SS`

`inc XY`

`dec SS`

`dec XY`

Rotate and shift group

`rlca`

`rla`

`rrca`

`rra`

`G K`

`G (hl)`

`G (XY+OFFSET)`

`G (XY+OFFSET),K`

`rld`

`rrd`

Bit set, reset and test group

`bit N,K`

`bit N,(hl)`

`bit N,(XY+OFFSET)`

`M N,K`

`M N,(hl)`

`M N,(XY+OFFSET)`

`M N,(XY+OFFSET),K`

Jump group

`jp WORD`

`jp Z,WORD`

`jr OFFSET`

`jr Z,OFFSET`

`jp (hl)`

`jp (XY)`

`djnz OFFSET`

Call and return group

`call WORD`

`call Z,WORD`

`ret`

`ret Z`

`reti` and `retn`

`rst N`

Input and output group

`in a,(BYTE)`

`in J,(c)`

`in (c)`

`ini`

`inir`

`ind`

`indr`

`out (BYTE),a`

`out (c),J`

`out (c),0`

`outi`

`otir`

`outd`

`otdr`