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The Z180 Mark IV is a single board computer, meaning it may run stand-alone. It also has an interface to the RetroBrew bus (ECB) for access to additional peripheral boards.
Power is supplied to the Mark IV SBC through the ECB bus, or through a 4-pin Molex connector (PC/AT disk drive power connection). The board operates using +5V power only.
Board Archive pages here.
PCB Layout: :boards:sbc:z180_mark_iv:markiv-brd-2.0-008.pdf
Parts List: :boards:sbc:z180_mark_iv:mark_iv-parts_list-2.0-008-rev.txt
OBSOLETE: Gerber::boards:sbc:z180_mark_iv:markiv-brd-2.0-008.pdf (out of date Silkscreen layer)
The circuit layers of the two Gerber ZIPs are identical. The "008a" Gerbers correct information on the Silkscreen layer)
Note: For board manufacture at JLPCB rename the PCB_Edges, Inner2, Inner3 file from .gbr to .gm1, .gp1 and .gp2 respectively.
The UNA BIOS was developed on the Mark IV, and was updated to version 2.1 in January 2017. The distributed images contain Will's port of CP/M 2.2.
See: software/ firmwareos / una / binaries for the binary (.tgz and .zip) and source files.
Wayne's RomWBW is also distributed for this board.