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December 9th, 2019, 12:30 PM

SiriusHardware replied to a thread Anybody still using those Atom Power mini laptops? in General Off Topic

I still run two Atom-based Dell Mini 10Vs and I'm in the process of replacing their DC power sockets, and while I'm doing that, upgrading them to 2GB...

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13 replies | 260 view(s)
December 5th, 2019, 12:03 PM

SiriusHardware replied to a thread Utility to convert intel hex into ascii stream for sending from terminal emulator in Vintage Computer Tools

This could also be written in Python, which is available (free) for all sorts of platforms including for Windows and for Linux, including the...

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9 replies | 560 view(s)
November 20th, 2019, 09:23 AM

SiriusHardware replied to a thread National Semiconductor SC/MP Introkit in Other

Further developments, thanks to an observant user over on the Vintage Radio forums - it turns out that the purpose of the CA 08 instruction at 0046...

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59 replies | 3795 view(s)
November 19th, 2019, 04:08 PM

SiriusHardware replied to a thread National Semiconductor SC/MP Introkit in Other

Just found it - I wrote a quick bit of Python to compare the two files and the MK14 'Old OS' file that I have has a one-byte difference in it, at hex...

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59 replies | 3795 view(s)
November 19th, 2019, 12:04 PM

SiriusHardware replied to a thread National Semiconductor SC/MP Introkit in Other

Not sure, that is, in part, why I prod this thread occasionally. He / They did say they were busy. I did consider relays but I don't know off hand...

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59 replies | 3795 view(s)
November 19th, 2019, 10:57 AM

SiriusHardware replied to a thread National Semiconductor SC/MP Introkit in Other

After a bit of thought, here is one way to make sure the -12V supply is only applied to the PROM whenever the +5V supply is applied: Whenever...

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59 replies | 3795 view(s)
November 18th, 2019, 02:42 PM

SiriusHardware replied to a thread National Semiconductor SC/MP Introkit in Other

As a minor contribution to this thread I have put together (OK, thrown together) a PROM reader specifically aimed at reading the SCMPKB PROM,...

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59 replies | 3795 view(s)
November 14th, 2019, 03:23 PM

SiriusHardware replied to a thread 520STm Boot Issues in Atari

Without even looking in detail, those are going to be the TOS ROMs as there aren't another six unique-but-similar sized chips in the machine. The...

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18 replies | 1352 view(s)

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