Ppyo Posted April 3, 2023 Share Posted April 3, 2023 Has any of you an Atari 800XL with this same CPU: 8302? I see it is made in China (RC). 1 Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted April 3, 2023 Share Posted April 3, 2023 (edited) it's still a sally 6502C the markings do not denote the processor itself Edited April 3, 2023 by _The Doctor__ 1 Quote Link to comment Share on other sites More sharing options...
Ppyo Posted April 3, 2023 Author Share Posted April 3, 2023 Oh! I see, good to know! Thanks, Doc! Quote Link to comment Share on other sites More sharing options...
pseudografx Posted April 3, 2023 Share Posted April 3, 2023 Isn't 8302 actually production date? Week 2 of 1983. 1 Quote Link to comment Share on other sites More sharing options...
stepho Posted April 3, 2023 Share Posted April 3, 2023 From the image, the part number is CO14806-12. As pseudografx said, 8302 is the production date. 1 Quote Link to comment Share on other sites More sharing options...
+MrFish Posted April 3, 2023 Share Posted April 3, 2023 The logo is Rockwell 3 Quote Link to comment Share on other sites More sharing options...
Tickled_Pink Posted April 4, 2023 Share Posted April 4, 2023 On 4/3/2023 at 3:08 AM, Ppyo said: Has any of you an Atari 800XL with this same CPU: 8302? I see it is made in China (RC). I don't think all that much stuff was made in mainland China back then for Western markets. It was either Hong Kong or Taiwan. 1 Quote Link to comment Share on other sites More sharing options...
ACML Posted April 4, 2023 Share Posted April 4, 2023 Don't know what RC stands for, but it's not China. Look on the bottom of the chip, it should say Mexico. I typically see the RC marked Rockwell in 5200s. Anyone know why some Mexico made Rockwell SALLYs have the RC stencil? Quote Link to comment Share on other sites More sharing options...
+kheller2 Posted April 5, 2023 Share Posted April 5, 2023 See the 5200 FSM tech tip #7. RC Rockwell’s have a timing defect. 2 Quote Link to comment Share on other sites More sharing options...
ACML Posted April 5, 2023 Share Posted April 5, 2023 (edited) How did a glitched batch of 6502C meant for 5200 production (with required mods) end up in a 8bit computer? I believe the timing issue identified in the 5200 FSM is unique to the 5200, meaning those Rockwell (RC) marked CPUs should not have made it into the 8-bit computer supply chain. I guess the cannibalization of 5200 VLSI chips have introduced them into the available parts pool. I just bought one off eBay not knowing it's pedigree. Has that CPU been in your machine from the start? Have you had any issues with it operating (glitches, lock ups, dead screen)? Edited April 5, 2023 by ACML 1 Quote Link to comment Share on other sites More sharing options...
Ppyo Posted April 5, 2023 Author Share Posted April 5, 2023 2 hours ago, ACML said: How did a glitched batch of 6502C meant for 5200 production (with required mods) end up in a 8bit computer? I believe the timing issue identified in the 5200 FSM is unique to the 5200, meaning those Rockwell (RC) marked CPUs should not have made it into the 8-bit computer supply chain. I guess the cannibalization of 5200 VLSI chips have introduced them into the available parts pool. I just bought one off eBay not knowing it's pedigree. Has that CPU been in your machine from the start? Have you had any issues with it operating (glitches, lock ups, dead screen)? Yes, it is the same the 800XL came with when I got it. No Issues that I know of, so far! <knock on head> Quote Link to comment Share on other sites More sharing options...
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