DISPLAY INSTRUCTION OPCODES

HSCROL   XX   XX   XX   XX   XX   XX   XX   XX Horizontal scrolling
VSCROL     XX XX     XX XX     XX XX     XX XX Vertical scrolling
LD MEM SCAN         XX XX XX XX         XX XX XX XX Load memory scan (3-byte)
INST INTERRUPT     XX XX XX XX XX XX XX XX Display instruction interrupt
BLK1
BLK 2
BLK3...7
BLK8
00
10
..
70
  80
90
...
F0
  Blank 1 line
Blank 2 lines
Blank 3 through 7 lines
Blank 8 lines
JMP 01 81 Jump (3-byte)
JVB 41 C1 Jump and wait for vertical blank (3-byte)
CHR(40,2,8) 02 12 22 32 42 52 62 72 82 92 A2 B2 C2 D2 E2 F2 Character
mode
instructions
CHR(40,2,10) 03 13 23 33 43 53 63 73 83 93 A3 B3 C3 D3 E3 F3
CHR(40,4,8) 04 14 24 34 44 54 64 74 84 94 A4 B4 C4 D4 E4 F4
CHR(40,4,16) 05 15 25 35 45 55 65 75 85 95 A5 B5 C5 D5 E5 F5
CHR(20,5,8) 06 16 26 36 46 56 66 76 86 96 A6 B6 C6 D6 E6 F6
CHR(20,5,16) 07 17 27 37 47 57 67 77 87 97 A7 B7 C7 D7 E7 F7
MAP(40,4,8) 08 18 28 38 48 58 68 78 88 98 A8 B8 C8 D8 E8 F8 Memory
mode
instructions
MAP(80,2,4) 09 19 29 39 49 59 69 79 89 99 A9 B9 C9 D9 E9 F9
MAP(80,4,4) 0A 1A 2A 3A 4A 5A 6A 7A 8A 9A AA BA CA DA EA FA
MAP(160,2,2) 0B 1B 2B 3B 4B 5B 6B 7B 8B 9B AB BB CB DB EB FB
MAP(160,2,1) 0C 1C 2C 3C 4C 5C 6C 7C 8C 9C AC BC CC DC EC FC
MAP(160,4,2) 0D 1D 2D 3D 4D 5D 6D 7D 8D 9D AD BD CD DD ED FD
MAP(160,4,1) 0E 1E 2E 3E 4E 5E 6E 7E 8E 9E AE BE CE DE EE FE
MAP(320,2,1) 0F 1F 2F 3F 4F 5F 6F 7F 8F 9F AF BF CF DF EF FF