Here’s a brief SCELBI project update. There were 16 different PCBs made by SCELBI for the 8H and 8B computers. The current status of my reproduction efforts of each of those cards follows.

Main System Cards – working reproductions of all 10 cards types have been completed
Reproduced
1100 CPU – 8H/8B
1101 Data bus buffer – 8H/8B
1102 Input – 8H/8B
1103 Backplane – 8H
1104 Front Panel – 8H/8B
1105 1K SRAM – 8H
1106 Memory Expansion – 8B
1107 4K SRAM – 8B
1108 Backplane – 8B
1109 PROM – 8B

Peripheral Cards – 1 reproduced, 1 in progress, 4 haven’t been started
Reproduced
2104 Teletype interface*

In progress
2103 Audio Tape read

Not started
2105 Keyboard
2100 Oscilloscope digital**
2101 Oscilloscope analog
2102 Audio Tape output

* not as high as normal vector boards
** double width vector board

A pretty conservative estimate is that I’ll have cassette interface read and write cards completed and working in the first half of 2015. I’m kind of hoping I’ll have them going by VCF east, but I’m not committing myself to it. I’d like to complete the Oscilloscope and Keyboard interfaces by the end of 2015. It’s really hard to say if I’ll actually finish them by the time the year 2016, comes around.