RC2014 Zed, ROM Firmware is RomWBW HBIOS v3.4.0, 2023-12-31, CF Card is BIOS v3.5.1-rc.4 [WBW]

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David Hall

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Sep 5, 2025, 3:20:38 AMSep 5
to RC2014-Z80
Hi

I'm following the RomWBW manual trying to get applications working

The kit was supplied with ROM firmware HBIOS v3.4.0 and the CF card is BIOS v3.5.1

I boot up 

RomWBW HBIOS v3.4.0, 2023-12-31


RCBus [RCZ80_std] Z80 @ 7.372MHz

0 MEM W/S, 1 I/O W/S, INT MODE 1, Z2 MMU

512KB ROM, 512KB RAM

ROM VERIFY: 00 00 00 00 PASS


CTC: IO=0x88 NOT PRESENT

SIO0: IO=0x80 SIO MODE=115200,8,N,1

SIO1: IO=0x82 SIO MODE=115200,8,N,1

DSRTC: MODE=STD IO=0xC0 Fri 2025-09-05 17:08:21 CHARGE=OFF

MD: UNITS=2 ROMDISK=384KB RAMDISK=352KB

FD: MODE=RCWDC IO=0x50 NOT PRESENT

IDE: IO=0x10 MODE=RC

IDE0: ATA 8-BIT LBA BLOCKS=0x0003D400 SIZE=122MB

IDE1: NO MEDIA

PPIDE: IO=0x20 PPI NOT PRESENT

CH0: IO=0x3E TYPE=CH375 VER=0x37

CHUSB0: BLOCKS=0x0728FFFF SIZE=58655MB

CH1: IO=0x3C NOT PRESENT

FP: IO=0x00 NOT PRESENT


Unit        Device      Type              Capacity/Mode

----------  ----------  ----------------  --------------------

Char 0      SIO0:       RS-232            115200,8,N,1

Char 1      SIO1:       RS-232            115200,8,N,1

Disk 0      MD0:        RAM Disk          352KB,LBA

Disk 1      MD1:        ROM Disk          384KB,LBA

Disk 2      IDE0:       Hard Disk         122MB,LBA

Disk 3      IDE1:       Hard Disk         --

Disk 4      CHUSB0:     USB Drive         58655MB,LBA




When I try to execute the hard disk 2, which is the CF Card


RCBus [RCZ80_std] Boot Loader


Boot [H=Help]: 2


Booting Disk Unit 2, Slice 0, Sector 0x00000000...


Volume "CP/M 2.2" [0xD000-0xFE00, entry @ 0xE600]...


CBIOS v3.5.1-rc.4 [WBW]


*** WARNING: HBIOS/CBIOS Version Mismatch ***


Configuring Drives...


        A:=IDE0:0

        B:=MD0:0

        C:=MD1:0

        D:=IDE0:1

        E:=IDE0:2

        F:=IDE0:3

        G:=CHUSB0:0

        H:=CHUSB0:1

        I:=CHUSB0:2

        J:=CHUSB0:3


        1853 Disk Buffer Bytes Free


CP/M-80 v2.2, 54.0K TPA


Bdos Err On A: Select



I tried downloading updated ROM and using the Flash command, but I guess this doesnt work on the RC2014 Zed


What do I need to do to correct this or does the Zed Compact Flash not work with the Zed Rom?




Wayne Warthen

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Sep 5, 2025, 11:30:31 AMSep 5
to RC2014-Z80
You are on the right track.  You do want to upgrade your ROM to v3.5.1.  This should work fine.  Where did you have trouble?

Thanks, Wayne

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