Tims Retro Corner | Can you test a CPU with a handful of spare parts? @TimsRetroCorner | Uploaded May 2024 | Updated October 2024, 1 hour ago.
Big thanks to pcbway.com for sponsoring this video. I bought a batch of 6507 microprocessors from China for another project. But do they work? How can I test them? The 6507 is well known for being used in the Atari 2600, but I don't have one, so I need to think of another way to test them.
A technique I've used before on the Commodore 64 and VIC-20 is the 'NOP Tester'. Essentially this is a ROM replacement that hardwires the data bus to 'NOP', which moves the CPU to the next address. This will cycle through every address, which can be measured.
Sure it's a quick and dirty test, and in no way comprehensive. But can I build a NOP tester and test this batch of 6507s?
Let's find out...
If you'd like to help support this channel, please check out my Patreon. You can also make a one-off donation or use the channel Super Thanks.
Patreon: patreon.com/timsretrocorner
Donate: paypal.com/donate/?hosted_button_id=DC2YUGZDYKHRN
Follow me on Mastodon: https://retrorewind.social/@trc
Check out these channels:
8-Bit Retro Refix: / @8BitRetroReFix
Captain Commodore: / @CaptainCommodore
Retro4u: / @Retro4u
Josip Retro Bits: / @JosipRetroBits
Retro Krazy: / @RetroKrazy
8bitsinthebasement: / @8bitsinthebasement
Jess B's Tech Department / @techdept
Big thanks to pcbway.com for sponsoring this video. I bought a batch of 6507 microprocessors from China for another project. But do they work? How can I test them? The 6507 is well known for being used in the Atari 2600, but I don't have one, so I need to think of another way to test them.
A technique I've used before on the Commodore 64 and VIC-20 is the 'NOP Tester'. Essentially this is a ROM replacement that hardwires the data bus to 'NOP', which moves the CPU to the next address. This will cycle through every address, which can be measured.
Sure it's a quick and dirty test, and in no way comprehensive. But can I build a NOP tester and test this batch of 6507s?
Let's find out...
If you'd like to help support this channel, please check out my Patreon. You can also make a one-off donation or use the channel Super Thanks.
Patreon: patreon.com/timsretrocorner
Donate: paypal.com/donate/?hosted_button_id=DC2YUGZDYKHRN
Follow me on Mastodon: https://retrorewind.social/@trc
Check out these channels:
8-Bit Retro Refix: / @8BitRetroReFix
Captain Commodore: / @CaptainCommodore
Retro4u: / @Retro4u
Josip Retro Bits: / @JosipRetroBits
Retro Krazy: / @RetroKrazy
8bitsinthebasement: / @8bitsinthebasement
Jess B's Tech Department / @techdept
