Micro-Elf

Posted by musovern on May 19th, 2019 in Cosmac-Elf, Single Board Computers | 1 comment

This is based on the Micro- Elf project presented in Popular Electronics. Mike Riley from Elf-emulation.com has designed a PCB to make for easier construction than the wire-wrap method used in my Cosmac Elf.

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TRS-80 Model 1

Posted by musovern on May 19th, 2019 in TRS80, Vintage Computers | 0 comments

The Tandy TRS 80 model 1 was the first member of one of the most famous computer family. It was one of the first home computer and was launched at the same time as famous computers like the Apple II or the Commodore PET. Beside, Tandy competitors nicknamed was “Trash-80”.

The TRS-80 was developed was developed within the Radio Shack engineering group, based upon several processor chips, SC/MP, PACE, 8008, 8080 and finally the Z80.

It used a black & white TV set, made by RCA, without tuner as monitor. The earlier models use a poor basic called Basic Level 1 (the Basic and the OS fit in the 4 KB ROM!). It was replaced later with the Basic Level 2 which needed a 12 KB ROM.

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My S-100 Boards

Posted by musovern on Apr 29th, 2019 in My S-100 Boards | 0 comments

These are my current finished images of S-100 Boards Console I/O board Propeller Chip Driven v2.51 ,Serial I/O Board v3.1, Bus extender ,4MB RAM board (with 1MB installed) ,MS-DOS support board v3a, Z80 CPU board v2, 8088 CPU board v1, Dual IDE board v3a, SMB (System monitor board) v2

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