Hi guys! Occasional lurker here, finally made an account.
I have just come into possession of one of the Sparrow boards that have been on offer (#50, specifically--the highest serial known?), and I am hoping to bring it back to life. The board is visually in very good condition, so I feel good about possibilities here. I have poked around in this forum and elsewhere and have picked up a lot of information, but I still have a couple of questions/concerns I'd like to address before considering applying power to this little piece of history...
CPU - If I'm not mistaken the right CPU for this is MC68030RC16. I already have a MC68030RC25, which is 25 MHz version of the same chip. Same packaging, same socket. According to the Motorola MC68030 electrical specifications manual
, page 5, the 25 MHz version of this chip should accept a clock signal as low as 12,5 MHz. So, would this chip work as a drop-in replacement, or do I need to scrounge up an actual MC68030RC16?
Power supply - The connector on the board seems to be the same as ST/STE PSU. Is this indeed the right PSU to use for this board? I found some discussion on this forum of it appearing to be suited for an ST power supply, but no confirmation that that actually is the right PSU. I obviously don't want to power this board up with the wrong PSU!
DSP - The DSP56001 on this board appears to have a dab of solder shorting two of the legs on the left hand side. See here:
Looking at the chipmunk database, I see that boards #37 and #40 have the same legs soldered together, but other Sparrow boards appear not to be this way. I think I'm not worried about this since my board isn't the only one, but I wonder if anyone has any comments on that?
I still need to scrounge up some parts to get this into possibly working shape, and I'm sure some more confusion will arise as I do.
Thanks for any input. And yes, I will add this to SN database.
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