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dave_m
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dave_m
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March 1st, 2021,
11:09 AM
dave_m
replied to a thread
PET / IEEE-488 interface woes
in
Commodore
Hutch, You are right. It looks like they are scarce. Still some on ebay but only cheap ones are from China. There are 11 available from Quest...
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6 replies | 84 view(s)
March 1st, 2021,
10:18 AM
dave_m
replied to a thread
PET / IEEE-488 interface woes
in
Commodore
When you get the IEEE bus working, be sure to learn the advanced features of the SD2PET. It supports subdirectories on the SD card. So instead of...
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6 replies | 84 view(s)
March 1st, 2021,
09:50 AM
dave_m
replied to a thread
PET / IEEE-488 interface woes
in
Commodore
Carl, Welcome to the Vintage Computer Forum. Your troubleshooting method is sound. Replace the MC3466 part with equivalent device. -dave_m
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6 replies | 84 view(s)
February 28th, 2021,
08:35 AM
MikeS
replied to a thread
Commodore 1541 5.25" disk drive question.
in
Commodore
You might find this thread interesting: file:///D:/My%20Documents/Downloads/AIM65/Pascal/VCFthreads/aim65%20pascal%20roms.html m
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11 replies | 222 view(s)
February 28th, 2021,
08:11 AM
MikeS
replied to a thread
Commodore 1541 5.25" disk drive question.
in
Commodore
Hi Hugo, Good choice if you're going to be working with 1541 disks; since the DOS is in the drive the AIM uses exactly the same disk format and...
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11 replies | 222 view(s)
February 27th, 2021,
02:05 PM
MikeS
replied to a thread
Commodore 1541 5.25" disk drive question.
in
Commodore
Yup. Works pretty well. The interface is nothing more than a 7406 and some resistors; the actual DOS is in the 1541 and the additional commands...
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11 replies | 222 view(s)
February 3rd, 2021,
09:06 AM
MikeS
replied to a thread
Help troubleshooting a Commodore PET CBM 8032 video duplication and display problem
in
Commodore
There are several simple circuits out there to combine the PET's signals into a composite signal, but the problem using a 'normal' NTSC monitor is...
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17 replies | 657 view(s)
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About dave_m
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About dave_m
Biography:
Engineer for North American Aviation and its successors Rockwell and Boeing
Location:
Southern California, USA
Interests:
old computers and test equipment, American Civil War, tennis
Occupation:
Electronics Engineer
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