Firmware, RomWBW, sc126

This configuration is specifically for the SC126, Z180 Motherboard.

The latest release of this Firmware is detailed in the table below.

NameWayne Warthen’s RomWBW
PlatformSCZ180
Configuration126
Release v3.0
DownloadSC126 RomWBW SCZ180_126 2020-03-23
Device Programming:
Code size512k bytes
Checksum02CE 1495 (MiniPro 6.6, SST39SF040)
Recommended ICSST39SF040-70
Core Components:
HBIOSVersion 3.0, 2020-03-27
Included Apps:
– CamelForthVersion 1.02
– CP/MVersion 2.2, CBIOS v3.0 [WBW]
– MonitorVersion unknown
– NASCOM BASICVersion 4.7b
– Tasty BASICVersion unknown
– Z-SystemVersion 1.1, CBIOS v3.0 [WBW]

The firmware is supplied (above) as a binary format file, which is suitable for use by most PROM programmers.

RomWBW’s documentation can be found here.

The very latest version, source code and documentation for RomWBW can be found here.

Supported Devices

  • SC126 Z180 motherboard
    • Z180 CPU (eg. Z8S180xx)
    • Z180’s asynchronous serial ports
    • Status LEDs at 0x0D
    • Real Time Clock at 0x0C
    • SD card at 0x0C
  • Compact Flash at 0x10 for loading CP/M

The lack of specific support does not exclude the use of other hardware. It just means the ROM does not do anything specific with it.

Supported Modules

  • Timer:
    • ?

The lack of specific support does not exclude the use of other hardware. It just means the ROM does not do anything specific with it.

Release Notes

The Z180’s internal I/O is set to the range 0xC0 to 0xFF.

Homebrew 8-bit retro computing