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RingingResonance's latest activity
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RingingResonance replied to the thread TRS-80 Screen Printer - Are There Schematics Out There?.I don't have a pinout of the cable, but I do have a schematic of the cable adapter. With this, you should be able to use the pinout of... -
RingingResonance replied to the thread Looking for FDC timing chip or substitute for TRS-80 model 4 Gate Array.I wonder what internal registers it has.
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RingingResonance reacted to Kool65's post in the thread Looking for FDC timing chip or substitute for TRS-80 model 4 Gate Array with
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You are correct there is some info in the service manual, see from page 184, there are timing diagrams, etc. Here is the chip layout... -
RingingResonance replied to the thread Where to look for signs of life on model 4 main board?.Swap video boards with the working one to see if the CRT is any good? Is the CRT heater glowing? Is there any blue glow in the neck of...
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RingingResonance posted the thread Looking for FDC timing chip or substitute for TRS-80 model 4 Gate Array in Tandy/Radio Shack.I'm in the processes of restoring a TRS-80 model 4 gate array and have located one of the problems causing the system to hang at startup...