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replace keyboard controller HD6301V1P OF3. Atari 520STFM
Posted: 18 Jun 2025 20:41
by Wes_T
Hello. Can i replace keyboard controller HD6301V1P OF3 with HD6301V1P 3F1? I think they could have different firmware. Atari 520STFM.
If not? How can i replace it?
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Re: replace keyboard controller HD6301V1P OF3. Atari 520STFM
Posted: 18 Jun 2025 21:10
by mikro
There's no "firmware" built-in, the HD6301 code is uploaded by TOS upon boot.
Re: replace keyboard controller HD6301V1P OF3. Atari 520STFM
Posted: 18 Jun 2025 21:13
by Wes_T
Thats mean i don need to worry about an just replace?
Thank You
Re: replace keyboard controller HD6301V1P OF3. Atari 520STFM
Posted: 23 Jun 2025 13:23
by ijor
mikro wrote: 18 Jun 2025 21:10
There's no "firmware" built-in, the HD6301 code is uploaded by TOS upon boot.
Hmm, no. The HD6301 has ROM "burned" at factory.
It is possible to upload a small amount of code that would run from RAM. Some demos do that. But that has very limited functionality because there is so little RAM space available.
Re: replace keyboard controller HD6301V1P OF3. Atari 520STFM
Posted: 23 Jun 2025 15:17
by mikro
Ah, right. I have mixed up these two, thanks for clarification.
Re: replace keyboard controller HD6301V1P OF3. Atari 520STFM
Posted: 01 Jul 2025 08:19
by Wes_T
Thank you. Lucky keyboard is working on old controler.