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VDA Device Initialization Flow Cleanup
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Wayne Warthen
@@ -132,11 +132,10 @@ DEVICE ($06):
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E=Device Number
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C=Device Attributes
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Serial Device Attributes Byte:
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;7: 1=Floppy, 0=Hard Disk (or similar, e.g. CF, SD, RAM)
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H=Media Type (RS-232, Terminal, etc.)
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L=Video Unit Id (if Media Type == VDA)
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Disk Device Attributes Byte:
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7: 0=RS-232, 1=Terminal
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If Terminal, 3-0 is attached Video Unit #
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==============
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Disk Functions
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@@ -265,14 +264,15 @@ Disk 6 SD0: SD Card 4096M, LBA
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Disk 7 PRPSD0: SD Card 2048M, LBA
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Disk 8 RF0: RAM Floppy 4M, LBA
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Serial 0 UART0: RS-232 38400,8N1,HFC
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Serial 1 PRPCON0: Direct --
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Serial 2 CVDU0: Direct --
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Serial 2 VDU0: Direct --
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Serial 2 TMS0: Direct --
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Video 0 PRPCON0: VDA Text 80x25, ANSI
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Video 1 CVDU0: VDA Text 80x25, ANSI
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Video 2 VDU0: VDA Text 80x25, ANSI
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Video 3 TMS0: VDA Text 40x25, TTY
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Serial 1 PRPCON0: Terminal Video 0
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Serial 2 CVDU0: Terminal Video 1
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Serial 3 VDU0: Terminal Video 2
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Serial 4 TMS0: Terminal Video 3
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Video 0 PRPCON0: CRT Text 80x25, ANSI
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Video 1 CVDU0: CRT Text 80x25, ANSI
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Video 2 VDU0: CRT Text 80x25, ANSI
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Video 3 TMS0: CRT Text 40x25, TTY
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Video 4 NEC0 CRT Graphics 600x400
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Unit: Function Group & Unit Index
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Device: <driver>_DEVICE Device Type & Device Num
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@@ -287,83 +287,30 @@ Capacity/Mode:
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-----------------------------------------------------------------------------------
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<VDA>_INIT:
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- INIT HARDWARE
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- INIT CRT HARDWARE
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- INIT KEYBOARD HARDWARE
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- CALL <VDA>_VDARES (<NO PARMS>)
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- ADD OURSELVES TO VDA_TBL
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- ADD OURSELVES TO CIO_TBL
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- GOTO <VDA>_VDAINIT
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- CALL TERM_ATTACH (C=VIDEO UNIT, DE=<VDA>_DISPATCH)
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<VDA>_VDAINIT: (BC=FUNCTION/DEVID, HL=BITMAP ADR, D=TERMTYPE, E=VIDEO MODE)
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- CALL <VDA>_VDARESET
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- INITIALIZE EMULATION BY CALLING EMU_INIT (B=TERMTYPE, C=DEVTYPE, DE=VDADISPADR) ==> (DE=CIODISPADR)
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- SAVE DE TO <VDA>_CIODISPADR TO FORWARD SUBSEQUENT CIO FUNCTION CALLS
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<VDA>_VDARES: (<NO PARMS>)
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- HOME CURSOR
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- CLEAR SCREEN
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- RETURN (A=STATUS)
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<VDA>_VDARESET:
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- RESET HARDWARE
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TERM_ATTACH: (C=VIDEO UNIT, DE=<VDA>_DISPATCH)
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- CALL <EMU>_INIT (B=TERM DEV NUM, C=VIDEO UNIT, DE=<VDA>_DISPATCH)
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- ADD OURSELVES TO CIO_TBL USING <EMU>_DISPATCH
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- RETURN (A=STATUS)
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EMU_INIT: (B=TERMTYPE, C=DEVTYPE, DE=VDADISPADR) ==> (DE=CIODISPADR)
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- GOTO TO <EMU>_INIT BASED ON VALUE IN B
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<EMU>_INIT: (C=DEVTYPE, DE=VDADISPADR) ==> (DE=CIODISPADR)
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- RECORD C TO <EMU>_DEVTYPE SO <EMU>_DEVICE FUNCTION CAN RETURN IT
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- RECORD DE IN <EMU>_VDADISPADR FOR LATER USE IN CALLING PARENT VDA DRIVER
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- INITIALIZE/RESET EMULATION ENGINE
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- RETURN (A=STATUS, DE=CIODISPADR)
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--------------------------
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md
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hdsk
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rf
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ide
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sd
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ppide
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fd
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prp
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ppp
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--------------------------
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0: RAM- RAMdrive on the Z180 SBC Mark IV board
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LBASupported UserAddressableSectors 832
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1: ROM- ROMdrive on the Z180 SBC Mark IV board
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LBASupported UserAddressableSectors 768
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2: IDE- SanDisk SDCFHSNJC-004G
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s/n: DMZ031215013440 fmw: HDX 7.08
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CHS: 7751:16:63 nSectors 7813008 MaxBlkTransfer 1
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LBASupported UserAddressableSectors 7813120
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3: IDE- SanDisk SDCFHSNJC-004G
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s/n: BKZ031215015432 fmw: HDX 7.08
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CHS: 7751:16:63 nSectors 7813008 MaxBlkTransfer 1
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LBASupported UserAddressableSectors 7813120
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4: SD- SD SU02G
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s/n: 139401536 fmw: 8.0 d/c: 2013-07
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LBASupported UserAddressableSectors 1931264
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Boot UNA unit number or ROM? [R,X,0..4] (R):
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N8VEM UNA CP/M (Will Sowerbutts, 2014-08-01 git cbed09)
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Unit Disk Driver Capacity Slices Start LBA Flags
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0 RAM0 Memory 416.0KB 1 0x00000000 (formatted)
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1 ROM0 Memory 384.0KB 1 0x00000000
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2 IDE0 Dual-IDE 3.7GB 469 0x00000000 MBR FGN
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3 IDE1 Dual-IDE 3.7GB 469 0x00000000 MBR FGN
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4 SD0 CSIO-SD 943.0MB 0 0x00000000 MBR FGN
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Drive A: assigned to RAM0 slice 0
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Drive B: assigned to ROM0 slice 0
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Drive C: assigned to IDE0 slice 0
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Drive D: assigned to IDE1 slice 0
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Loading Residual CP/M at 0xE100 ... done.
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CP/M 2.2 Copyright 1979 (c) by Digital Research
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---
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<EMU>_INIT: (B=TERM DEV NUM, C=VIDEO UNIT, DE=<VDA>_DISPATCH)
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- SAVE TERM DEV NUM TO <EMU>_DEVNUM
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- SAVE VIDEO UNIT TO <EMU>_VDAUNIT
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- SAVE <VDA>_DISPATCH TO <EMU>_VDADISPADR
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- CALL <EMU>_RESET (<NO PARMS>)
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- RETURN (DE=<EMU>_DISPATCH, A=STATUS)
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<EMU>_RESET: (<NO PARMS>)
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- QUERY ATTACHED VDA FOR SCREEN SIZE (VIA <EMU>_VDADISP)
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- INITIALIZE ALL WORKING VARIABLES AND EMULATOR STATE
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- RETURN (A=STATUS)
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