Superboard II Rev B Simple SYN600 upgrade to CEGMON ROM
SYN600 upgrade to CEGMON ROM
EEPROM 2816 Monitor ROM replacement
Pin 20 (assigned to non-inverted phi-2 clock) is now connected to GND
Pin 21 is connected to +5V to ensure no writes to a 2816 EEPROM can occur.
Pin 18 is now connect to U18 – pin 4) /MCS signal which is active-low
Video of upgrade https://youtu.be/WZUsieD9VBU
Sources:
Dave's OSI page https://www.osiweb.org/
Professor Mark Csele Series 600 (Challenger 1P / Superboard) page
http://www.technology.niagarac.on.ca/pe ... uperboard/
Superboard II Rev B Simple SYN600 upgrade to CEGMON ROM
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royedmund
- Posts: 23
- Joined: Wed May 18, 2022 7:08 am
- Location: Blue Mountains, Australia
Superboard II Rev B Simple SYN600 upgrade to CEGMON ROM
Superboard II Rev B
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harrywalter99
- Posts: 11
- Joined: Tue Dec 01, 2020 6:20 am
Re: Superboard II Rev B Simple SYN600 upgrade to CEGMON ROM
Great inspirational post and video. You may be able to modify another socket to plug into the original one. Wire wrap wire and a Bondic UV Liquid Plastic Welder to provide some strain relief to the wire, and to keep it place.
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royedmund
- Posts: 23
- Joined: Wed May 18, 2022 7:08 am
- Location: Blue Mountains, Australia
Re: Superboard II Rev B Simple SYN600 upgrade to CEGMON ROM
That is a great idea. I had considered making a daughter board with the new ROM but this is a much simpler suggestion. Thanks.
Superboard II Rev B