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Mobius 030 Accelerator Problem
Posted by: Phipli on 2026-04-18 23:59:14 Well, the data's definitely gone... I can find the chip but I'm gonna need to... Well, you know, I don't have the code that was on that. The programmed code. View attachment 97808 The code is loaded into them at runtime. But it is probably just for the video circuit so just leave it out for now. Put it somewhere safe. Define "popped"
Posted by: MacintoshMan1999 on 2026-04-19 00:02:22 The code is loaded into them at runtime. But it is probably just for the video circuit so just leave it out for now. Put it somewhere safe. Define "popped" Popped as in the chip popped open, picture:
Posted by: Phipli on 2026-04-19 00:05:04 Right. Well, if you're lucky it might not have damaged too much else. Like I said, leave the socket empty, you probably don't need it anyway. Does the SE still work without the card?
Posted by: MacintoshMan1999 on 2026-04-19 00:12:18 Right. Well, if you're lucky it might not have damaged too much else. Like I said, leave the socket empty, you probably don't need it anyway. Does the SE still work without the card? Yes, it does. The Xilinx XC2064 PC68C is a FPGA, where does the code come from if not already pre-programmed in?
Posted by: Phipli on 2026-04-19 00:20:13 I didn’t know that the SE could boot without RAM, I’ll try that and report back. Hum, I thought these required RAM on the logic board. Yeah, checked the manual, the SE must have some RAM installed on the logic board. At least 512k. where does the code come from if not already pre-programmed in? Code isn't baked into an FPGA, it is provided as a bitstream, either from a ROM chip, or in this case, more likely a bitstream written out by the driver on the SE when the video driver loads. That chip is just used for the video out.
Posted by: MacintoshMan1999 on 2026-04-19 00:26:34 Hum, I thought these required RAM on the logic board. Yeah, checked the manual, the SE must have some RAM installed on the logic board. At least 512k. Code isn't baked into an FPGA, it is provided as a bitstream, either from a ROM chip, or in this case, more likely a bitstream written out by the driver on the SE when the video driver loads. That chip is just used for the video out. Hmmm... Well, I could grab a replacement on eBay. I think that's what I'll do.
Posted by: Phipli on 2026-04-19 00:29:15 Hmmm... Well, I could grab a replacement on eBay. I think that's what I'll do. Leave it out until you get everything else working, you don't know what other damage you did putting it in the wrong way.
Posted by: MacintoshMan1999 on 2026-04-19 00:38:04 As far as I can tell, nothing else is damaged. Honestly, I'm just at the end of my rope. I really can't troubleshot this myself, It's too in depth for me. Leave it out until you get everything else working, you don't know what other damage you did putting it in the wrong way.
Posted by: Phipli on 2026-04-19 00:40:32 As far as I can tell, nothing else is damaged. Honestly, I'm just at the end of my rope. I really can't troubleshot this myself, It's too in depth for me. Well, have you done the steps in the very first reply? What are the voltages when the accelerator is running? check the RAM and see if the power supply is supplying the proper 5V and 12V, you can get access to both to probe through the floppy port
Posted by: MacintoshMan1999 on 2026-04-19 00:44:45 Well, have you done the steps in the very first reply? What are the voltages when the accelerator is running? I just want this fucking thing to work. That's all I fucking want. I can't fucking have that. I've even tried this on another SE, by the way. Same result.
Posted by: MacintoshMan1999 on 2026-05-06 00:12:24 Well, have you done the steps in the very first reply? What are the voltages when the accelerator is running? I'm sorry for the outburst, I'm just frustrated Yes, I have tested the voltages with the accelerator. They're correct, like I assumed. Also, I've purchased a replacement XC2064. The same problem persists however.
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