musovern | Vintage Vibe

SBC6120 RBC Edition

In the late 90s, Robert Armstrong of Spare Time Gizmos designed a single board computer using the Harris HD-6120 CMOS “PDP-8 on a chip”.

Bob no longer offers new SBC6120 kits or boards, be he has made the design documentation, source code, and design files for the SBC6120 available for others to use at the Spare Time Gizmos SBC6120 Page with the following license:

SGS NBZ80-B Nanocomputer

SGS NBZ80 Nanocomputer

This unit is the NBZ80-B: Nanocomputer base board with 2K ROM, Input Hex keypad device and power supply. Doc and Nanobook 1. Basically, the S without the experiment card NEZ-80.

Its manufacturer, SGS (Societa Generale Semiconduttore) is from Olivetti and Telettra, created in 1950. In 1960, the inevitable American founder Fairchild created in partnership with the Italian state SGS-Fairchild.
In 1971, SGS and Ates were merged by decree of the Italian Government, following the withdrawal of Fairchild in 1968 and the poor health of SGS.
After an agreement with Zilog in 1979 to create a second source for the Z80 and Z8000, it was finally the Mostek smelter that was bought in 1981.
In 1987, Thomson bought SGS to create SGS-Thomson Microelectronics.asically, the S without the experiment card NEZ-80.

Z80 SBC-2G-512k

Posted by musovern on Jun 27th, 2018 in Single Board Computers, Z80 SBC-2G-512k | 0 comments

In march 2007 Grant Searle introduced “CP/M on Breadboard”, a 9 chip Z80 CP/M computer using a CF card as mass storage device.

This is the up-to-date version, including 5 CP/M variants and NASCOM Basic

Z80 SBC-2G-512k

CPU Data Sheets

Posted by musovern on Jun 15th, 2018 in Datasheets, Software | 0 comments

Zilog Z80 CPU Read More...

Z80 SBC – Zapple

Posted by musovern on Jun 14th, 2018 in Single Board Computers, Z80 SBC - Zapple | 0 comments

This is a Z80 single board computer that I made some years ago, After reading this excellent book “Build Your Own Z80 Computer Book” by Steve Ciarcia.

I have made a “Zapple like Monitor” it’s a work in progress.

It’s built on a breadboard at the moment. I’ll Design a PCB at some time in the future and expand the RAM to 64k and ROM Monitor to 32k.