Appendix A - The character set
This is the complete ZX80 character set, with codes in decimal & hex. If one imagines the codes as being
Z80 machine code instructions, then the right hand columns give the corresponding assembly language
mnemonics. As you are probably aware if you understand these things, certain Z80 instructions are
compounds starting with CBh or EDh; the two right hand columns give these.
Code Character Hex Z80 assembler - after CBh - after EDh
0 space 00 nop rlc b
1 01 ld bc,NN rlc c
2 02 ld (bc),a rlc d
3 03 inc bc rlc e
4 04 inc b rlc h
5 05 dec b rlc l
6 06 ld b,N rlc (hl)
7 07 rlca rlc a
8 08 ex a,af' rrc b
9 09 add hl,bc rrc c
10 0A ld a,(bc) rrc d
11 " 0B dec bc rrc e
12 £ 0C inc c rrc h
13 $ 0D dec c rrc l
14 : 0E ld c,N rrc (hl)
15 ? 0F rcca rrc a
16 ( 10 djnz DIS rl b
17 ) 11 ld de,NN rl c
18 > 12 ld (de),a rl d
19 < 13 inc de rl e
20 = 14 inc d rl h
21 + 15 dec d rl l
22 - 16 ld d,N rl (hl)
23 * 17 rla rl a
24 / 18 jr DIS rr b
25 ; 19 add hl,de rr c
26 , 1A la a,(de) rr d
27 . 1B dec de rr e
28 0 1C inc e rr h
29 1 1D dec e rr l
30 2 1E ld e,N rr (hl)
31 3 1F rra rr a
32 4 20 jr nz,DIS sla b
33 5 21 ld hl,N sla c
34 6 22 ld (NN),hl sla d
35 7 23 inc hl sla e
36 8 24 inc h sla h
37 9 25 dec h sla l
38 A 26 ld h,N sla (hl)
39 B 27 daa la a
40 C 28 jr z,DIS sra b
To Next Page
Loading...
Need help?
General
