Cromemco Z-2D

Cromemco Z-2D with extensive documentation and master disks. I got it with 2 16k RAM cards, a 4FDC disk controller and a ZPU

This is a stub begun on October 16, 2017.

Cromemco Z2 Ad July 1977

Cromemco Z-2 Systems at Chicago Mercantile Exchange (1984) (Thanks wikicommons)

Progress

July 23, 2018 I got the RDOS signon with a ZPU, (2) 16kz and a 4FDC.

Chassis

Documentation

Lot's of excellent documentation including schematics for all the boards in the Z-2D system. That blank cover is for Micah SuperBIOS v 2.52

I don't have an image right now of the dual eight inch floppy disk drives in a Cromemco branded wood case.

Disk masters

Restoration / Testing

Board set

Came with

• ZPU rev E
• 2 - 16kz rev C
• 4FDC rev C

Additional Inventory

Already have a couple ZPUs and a 4FDC. I just bought a couple 16kz Rev C on ePay.

Power Supply

--Jeffa (talk) 11:27, 17 October 2017 (CDT)

Checked that power transformer taps were correct for my 100 - 125v line voltage

Measured

• 21.47
• -21.51
• 11.11

Specifications

From Z-2 Instruction Manual page 1

• 15 - 21 @ 15 amps unregulated
• -15 - -21 @15 amps unregulated
• 7 - 11 @30 amps unregulated

I'll live with it.

Resources

• Cromemco Z-2 at Wikipedia.

Manuals

• 4FDC manual
• 16FDC manual
• 16KZ RAM manual
• 64KZ RAM manual
• ZPU manual