; ============================================================================= ; Cold boot entry path 0036h through menu / key dispatch / test entry ; Source: VECTOR 4/8086 - V2_AC_Interleaved_XHE_XHO.bin ; CPU: Z80 | base: 0000h | size: 8192 ; Generated linear disassembly with fixed relative branch targets ; ============================================================================= ; --- Cold boot -> menu -> key dispatch -> T handler start --- 0036 f3 DI ; COLD BOOT: DI 0037 21fd07 LD HL, 07FDh ; I/O init table @07FD, 14 pairs 003A 060e LD B, 0Eh 003C 4e LD C, (HL) 003D 23 INC HL 003E 7e LD A, (HL) 003F ed79 OUT (C), A 0041 00 NOP 0042 00 NOP 0043 23 INC HL 0044 10f6 DJNZ 003Ch 0046 1e00 LD E, 00h ; mapper probe start 0048 0e16 LD C, 16h 004A 0620 LD B, 20h 004C 1680 LD D, 80h 004E ed51 OUT (C), D 0050 210020 LD HL, 2000h 0053 7e LD A, (HL) 0054 2f CPL 0055 77 LD (HL), A 0056 be CP (HL) 0057 2ec8 LD L, C8h 0059 2004 JR NZ, 005Fh 005B 1e01 LD E, 01h 005D 2e88 LD L, 88h 005F 1609 LD D, 09h 0061 0620 LD B, 20h 0063 0e16 LD C, 16h 0065 ed69 OUT (C), L 0067 78 LD A, B 0068 c608 ADD A, 08h 006A 47 LD B, A 006B 2d DEC L 006C 15 DEC D 006D 20f6 JR NZ, 0065h 006F 2e31 LD L, 31h 0071 78 LD A, B 0072 d610 SUB 10h 0074 47 LD B, A 0075 ed69 OUT (C), L 0077 7b LD A, E 0078 32dd5f LD (5FDDh), A 007B 310060 LD SP, 6000h ; SP=6000h 007E 212708 LD HL, 0827h ; video OUTI to port 04 0081 011804 LD BC, 0418h 0084 eda3 OUTI 0086 dde3 EX (SP), IX 0088 dde3 EX (SP), IX 008A 20f8 JR NZ, 0084h 008C 212608 LD HL, 0826h ; CRTC program ports 0E/0F 008F 060e LD B, 0Eh 0091 0e0f LD C, 0Fh 0093 78 LD A, B 0094 3d DEC A 0095 d30e OUT (0Eh), A 0097 7e LD A, (HL) 0098 d30f OUT (0Fh), A 009A 2b DEC HL 009B 10f6 DJNZ 0093h 009D cd2105 CALL 0521h ; clear console 0521 00A0 16d0 LD D, D0h ; fill attr banks D0-DE @7000 00A2 cd3604 CALL 0436h 00A5 d5 PUSH DE 00A6 210070 LD HL, 7000h 00A9 110170 LD DE, 7001h 00AC 01ff07 LD BC, 07FFh 00AF 360f LD (HL), 0Fh 00B1 edb0 LDIR 00B3 d1 POP DE 00B4 7a LD A, D 00B5 14 INC D 00B6 fedf CP DFh 00B8 20e8 JR NZ, 00A2h 00BA 0e01 LD C, 01h 00BC 212b08 LD HL, 082Bh 00BF 0606 LD B, 06h 00C1 eda3 OUTI 00C3 dde3 EX (SP), IX 00C5 dde3 EX (SP), IX 00C7 20f8 JR NZ, 00C1h 00C9 3e08 LD A, 08h 00CB d300 OUT (00h), A 00CD 218505 LD HL, 0585h ; print title @0585 00D0 cde403 CALL 03E4h 00D3 0e21 LD C, 21h 00D5 0612 LD B, 12h 00D7 3e05 LD A, 05h 00D9 cd4304 CALL 0443h 00DC 0d DEC C 00DD 20f6 JR NZ, 00D5h 00DF 21a805 LD HL, 05A8h ; print revision @05A8 00E2 cde403 CALL 03E4h 00E5 21205b LD HL, 5B20h 00E8 22d45f LD (5FD4h), HL 00EB 210022 LD HL, 2200h ; main RAM test @2200 00EE b7 OR A 00EF 77 LD (HL), A 00F0 3eff LD A, FFh 00F2 be CP (HL) 00F3 200a JR NZ, 00FFh 00F5 217e06 LD HL, 067Eh ; MAIN MEMORY NOT INSTALLED 00F8 cde403 CALL 03E4h 00FB cddd03 CALL 03DDh 00FE 76 HALT ; HALT if no RAM 00FF ed5bd85f LD DE, (5FD8h) ; phase word (5FD8) 0103 213130 LD HL, 3031h 0106 b7 OR A 0107 ed52 SBC HL, DE 0109 2844 JR Z, 014Fh 010B 213230 LD HL, 3032h 010E b7 OR A 010F ed52 SBC HL, DE 0111 2818 JR Z, 012Bh 0113 213130 LD HL, 3031h 0116 22d85f LD (5FD8h), HL 0119 21cf06 LD HL, 06CFh ; PERFORMING SYSTEM TEST 011C cde403 CALL 03E4h 011F cdd201 CALL 01D2h 0122 da4f01 JP C, 014Fh 0125 213230 LD HL, 3032h 0128 22d85f LD (5FD8h), HL 012B 310022 LD SP, 2200h ; AUTO-BOOT entry 012E 3aaa09 LD A, (09AAh) 0131 b7 OR A 0132 281b JR Z, 014Fh 0134 21e706 LD HL, 06E7h ; LOADING - PLEASE WAIT 0137 cde403 CALL 03E4h 013A cdaa15 CALL 15AAh 013D b7 OR A 013E 200f JR NZ, 014Fh 0140 cd7210 CALL 1072h 0143 380a JR C, 014Fh 0145 2008 JR NZ, 014Fh 0147 3e18 LD A, 18h 0149 cd4304 CALL 0443h 014C cd0024 CALL 2400h ; CALL 2400 loaded system 014F 310022 LD SP, 2200h ; MAIN MENU 0152 cdaa15 CALL 15AAh 0155 3e18 LD A, 18h 0157 cd4304 CALL 0443h 015A 217c06 LD HL, 067Ch 015D cde403 CALL 03E4h 0160 3aaa09 LD A, (09AAh) 0163 b7 OR A 0164 2806 JR Z, 016Ch 0166 21d205 LD HL, 05D2h ; print [W] if (09AA) 0169 cde403 CALL 03E4h 016C 3aad09 LD A, (09ADh) 016F b7 OR A 0170 2806 JR Z, 0178h 0172 21fa05 LD HL, 05FAh ; print [F] if (09AD) 0175 cde403 CALL 03E4h 0178 216706 LD HL, 0667h ; print [T] 017B cde403 CALL 03E4h 017E 21ce05 LD HL, 05CEh 0181 cde403 CALL 03E4h 0184 cdd503 CALL 03D5h ; wait key loop 0187 28fb JR Z, 0184h 0189 cdda03 CALL 03DAh ; read key 018C fe61 CP 61h 018E 3802 JR C, 0192h 0190 e65f AND 5Fh 0192 21f407 LD HL, 07F4h ; scan key table @07F4 0195 0603 LD B, 03h 0197 be CP (HL) 0198 23 INC HL 0199 2806 JR Z, 01A1h 019B 23 INC HL 019C 23 INC HL 019D 10f8 DJNZ 0197h 019F 18e3 JR 0184h 01A1 5e LD E, (HL) 01A2 23 INC HL 01A3 56 LD D, (HL) 01A4 eb EX DE, HL 01A5 fe20 CP 20h 01A7 d44304 CALL NC, 0443h 01AA cddd03 CALL 03DDh 01AD 114f01 LD DE, 014Fh ; PUSH 014F / JP (HL) handler 01B0 d5 PUSH DE 01B1 e9 JP (HL) 01B2 af XOR A ; key T: continuous test 01B3 32dc5f LD (5FDCh), A 01B6 21a406 LD HL, 06A4h 01B9 cde403 CALL 03E4h 01BC 3adc5f LD A, (5FDCh) 01BF cd0604 CALL 0406h 01C2 3e0e LD A, 0Eh 01C4 cd4304 CALL 0443h 01C7 cdd201 CALL 01D2h 01CA d8 RET C 01CB c0 RET NZ 01CC 21dc5f LD HL, 5FDCh 01CF 34 INC (HL) 01D0 18e4 JR 01B6h