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Crazy-Blaster/Crazy BIOS/Info.txt
Tolik 9b9bb846d8 starting vBIOS
2024-07-31 03:29:05 +10:00

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; § ¬ ¯«¥­ ç¥à¥§ ª àâã ¯®à⮢ ­  #7C/#3C ¨ #74/#24
CNF_PORT:
.ON EQU #74
.OFF EQU #24
.vBIOS EQU .ON
.vZX_ROM EQU .OFF
; Data:
.BIOS EQU 0
.EXTENSION EQU 1
.TURBO.OFF EQU 2 ; ¤ ­­ë¥ ¤«ï ¢ëª«î祭¨ï TURBO
.TURBO.ON EQU 3 ; ¤ ­­ë¥ ¤«ï ¢ª«î祭¨ï TURBO
.CNF_0 EQU #04 ; ª àâ  ¯®à⮢ 0
.CNF_1 EQU #0C ; ª àâ  ¯®à⮢ 1 (¤«ï ०¨¬  ¯®ç⨠ç¨á⮣® zx spectrum)
.CNF_2 EQU #14 ; ª àâ  ¯®à⮢ 2
.CNF_3 EQU #1C ; ª àâ  ¯®à⮢ 3 (०¨¬ ¤®áâ㯠 ª ¯®àâ ¬ ‚ƒ93 ¡¥§ ᨣ­ «  TR-DOS)
.PENT_RESET EQU #20
.SCORP_RESET EQU #40
.CNF_512 EQU #80 ; ¢ª«î祭¨¥ Pentagon 128
.ZX_BIOS EQU #00
.ZX_EXTENSION EQU #01
; ¯à¨¡¨â ¢ ª®­ä¥ £¢®§¤ï¬¨ ­  #7C/#3C
SYS_PORT:
.ON EQU #7C
.OFF EQU #3C
.RAM EQU .OFF
.ROM EQU .ON
; Data:
.PAGE0 EQU 1
.PAGE8 EQU 0
.EXTENSION EQU .PAGE0
.BIOS EQU .PAGE8
.TURBO.ON EQU CNF_PORT.TURBO.ON
.TURBO.OFF EQU CNF_PORT.TURBO.OFF
.CNF_0 EQU CNF_PORT.CNF_0
.CNF_1 EQU CNF_PORT.CNF_1
.CNF_2 EQU CNF_PORT.CNF_2
.CNF_3 EQU CNF_PORT.CNF_3
.PENT_RESET EQU CNF_PORT.PENT_RESET
.SCORP_RESET EQU CNF_PORT.SCORP_RESET
.CNF_512 EQU CNF_PORT.CNF_512
---------------------------------------------------
CNF_PORT ¢¨á¨â ­  4 ¢­¥è­¨å ¯®àâ å (#7C/#3C ¨ #74/#24) ç¥à¥§ ª àâã ¯®à⮢.
SYS_PORT £¢®§¤ï¬¨ ¢ ª®­ä¥ ­  #7C/#C
SYS_PORT ⮫쪮 ¯¥à¥ª«îç ¥â RAM/ROM
CNF_PORT ¬¥­ï¥â ¢áñ ®áâ «ì­®¥, ¯à¨ ¡¨â1=0 ¬¥­ïîâáï áâà ­¨æë í¬ã«ïâ®à  <20>‡“ ç¥à¥§ ¡¨â0
CNF_PORT
bit0 - TURBO: off/on ¨«¨ vROM:
; #24 - áâà ­¨æ  ¨§ ¢­.¯®àâ  (#E0..#E3)/(#E4..#E7)
; #74 - áâà ­¨æ  ¨§ ¢­.¯®àâ  #EB/#EF
bit1 - 1 - TURBO ena, 0 - ¯¥à¥ª«î祭¨¥ vROM page
bit2 - 1 - CNF ena
bit3 - \_ cnf0..cnf3 -\
bit4 - / - \
bit5 - CNF_PN[5..0]_RESET by 1 - á¡à®á <20>¥­â. ¯®àâ  - -|---> ¤¥©áâ¢ãîâ ⮫쪮 ¯à¨ bit2=1
bit6 - CNF_SC_RESET by 1 - á¡à®á ‘ª®à¯. ¯®àâ  - /
bit7 - CNF_PN[7..6]_RESET by 0 - á¡à®á <20>¥­â-512 -/
<20>¥à¥ª«î祭¨¥ áâà ­¨æ vROM:
____________________________________________________
| ‡­ ç¥­¨¥ | ‡ ¯¨áì ¢® ¢­¥è­¨© ¯®àâ: |
| ¨§ ¢­ãâà. |____________________________________|
| ¯®àâ  | #24 ---- | | | |
| €«ìâ¥àë | #3C (-rom) | | | |
| ||| | #7C (+rom) | #74 | 1FFD | 7FFD |
| \|/ | bit1..0 | bit1..0 | bit1 | bit4 |
|_____________|____________|_________|______|______|
|E0 | 00 | | 1 | ... |
|E1 (+dos_on) | 00 | | 0 | ... |
|E2 | 00 | | 0 | 0 |
|E3 | 00 | | 0 | 1 |
|E4 | 01 | | 1 | ... | LOGO #4B
|E5 (+dos_on) | 01 | | 0 | ... |
|E6 | 01 | | 0 | 0 | Recovery_1 #48
|E7 | 01 | | 0 | 1 | Recovery_2 #49
|EB | | 00 | ... | ... | BIOS #46
|EF | | 01 | ... | ... | EXTENSION #47
|_____________|____________|_________|______|______|
... - §­ ç¥­¨¥ ஫¨ ­¥ ¨£à ¥â
‘â ­¤ àâ­ë¥ áâà ­¨æë Ž‡“ ¤«ï ®¡à §®¢ <20>‡“ ᯥªâà㬠:
Page Name Int.Port Page Name Int.Port
#42 BASIC 128 #E2 | #48 ??? ??? ??? #E6
#43 BASIC 48 #E3 | #49 ??? ??? ??? #E7
#44 TR-DOS #E1 | #4A ??? ??? ??? #E5
#45 BIOS (ZX_EXP) #E0 | #4B ??? ??? ??? #E4
#46 BIOS (ZX_EXP) #EB
#47 BIOS (ZX_EXP2) #EF
SYS_PORT:
bit0 - TURBO: on/off ¨«¨ BIOS: Part1/Part0
bit1 - 1 - TURBO ena, 0 - ¯¥à¥ª«î祭¨¥ BIOS-PAGE
bit2 - 1 - CNF ena
bit3 - \_ cnf0..cnf3 -\
bit4 - / - \
bit5 - CNF_PN[5..0]_RESET by 1 - á¡à®á <20>¥­â. ¯®àâ  - -|---> ¤¥©áâ¢ãîâ ⮫쪮 ¯à¨ bit2=1
bit6 - CNF_SC_RESET by 1 - á¡à®á ‘ª®à¯. ¯®àâ  - /
bit7 - CNF_PN[7..6]_RESET by 0 - á¡à®á <20>¥­â-512 -/
”ã­ªæ¨ï bit0 ®¯à¥¤¥«ï¥âáï ç¥à¥§ bit1
bit7..bit3 áà ¡ â뢠î⠯ਠbit2 = 1
‡ ¯¨áì ¢ ¯®àâ #7C ¯®¤ª«îç ¥â <20>‡“ ¢ ®ª­® 0, § ¯¨áì ¢ ¯®àâ #3C ®âª«îç ¥â
<EFBFBD>‡“ ®â ®ª­  0, ¯®í⮬㠯®àâ 7‘/3C ­ §ë¢ ¥âáï System/User.
<EFBFBD>¥à¥ª«î祭¨¥ áâà ­¨æ <20>‡“ à ¡®â ¥â ¢ í⮬ ¢ à¨ ­â¥ â ª:
¢ <20>‡“ 16 áâà ­¨æ ®â 0 ¤® 15, ¯®àâ #5C ¨å ¯¥à¥ª«îç ¥â á bit3 xor /SYS (SYS_PORT bit[1..0] = b"0X" (BIOS: Part1/Part0))
¥á«¨ ᤥ« âì ld a,1 : out (sys_port_on),a - â® ­ã¬¥à æ¨ï áâà ­¨æ <20>‡“ ¡ã¤¥â ¯à ¢¨«ì­ ï ®â 0 ¤® 15,
¥á«¨ ᤥ« âì ld a,0 : out (sys_port_on),a - â® ­ã¬¥à æ¨ï áâà ­¨æ <20>‡“ ¡ã¤¥â á ¨­¢¥àâ¨à®¢ ­­ë¬ bit3:
áâà ­¨æë <20>‡“ 0-7 ¡ã¤ã⠭㬥஢ âìáï ª ª 8-15
áâà ­¨æë <20>‡“ 8-15 ¡ã¤ã⠭㬥஢ âìáï ª ª 0-7
¯¥à¥ª«î祭¨¥ áâà ­¨æ <20>‡“ ¯®à⮬ #5C ¯à®¨á室¨â ⮫쪮 ¯à¨ ¢®âª­ã⮩ <20>‡“ ç¥à¥§ sys_port.
Œ®¦­® ¯¥à¥ª«îç âì áâà ­¨æë ç¥à¥§ ¢­ãâ७­¨© ¯®àâ #8F, ⮣¤  bit4 í⮣® ¯®àâ  ¢ª«îç ¥â ᨣ­ « § ¯¨á¨ ¤«ï <20>‡“.
’ ª ¦¥ íâ®â ¯®àâ ¤ ñâ ¯àï¬ãî ­ã¬¥à æ¨î áâà ­¨æ ¯à¨ ãáâ ­®¢«¥­­®¬ bit4.
----------------------------------------------------
;!TODO
 ¯¤¥©â¥à ¤®«¦¥­ á ¬ ¢áâ ¢«ïâì ­®¬¥à ¯« âë ¨ ⨯ ¡¨âáâਬ 
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