C301564-001 MEGA STE REV B
Posted: Thu Jan 11, 2018 6:38 pm
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C301564-001 MEGA STE REV B
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Re: C301564-001 MEGA STE REV B
Posted: Thu Jan 11, 2018 6:38 pm
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Re: C301564-001 MEGA STE REV B
Posted: Tue Feb 05, 2019 7:00 pm
Hmm. Where do you locate the revisions on these motherboards? I only see CA400677 in the top left corner under the PSU.
Re: C301564-001 MEGA STE REV B
Posted: Tue Feb 05, 2019 8:24 pm
Re: C301564-001 MEGA STE REV B
Posted: Tue Feb 05, 2019 8:26 pm
Thanks. Sneaky...
Re: C301564-001 MEGA STE REV B
Posted: Wed Dec 09, 2020 1:06 am
My board has the same part and revision number, but has a couple of notable differences:
- Blitter is a separate IC, just under the right-hand VME ribbon
- ROM type headers are present and have jumpers fitted above the HI ROM
- An AJAX floppy controller is present, and the support GAL is the correct version for HD floppy support (although the drive itself is a DD Epson model. Can’t have it all I suppose!). The AJAX and GAL *might* be after-market, but the machine’s definitely still got its original FDD.
I’m still intrigued by the SPARE1 and SPARE2 sockets... Spare what, precisely?!
Oh and I just noticed - the two ICs at U8 and U9 are the same half-width as shown in the photo here, but they’re both labelled as “PRE QUAL”. And many more of my GALs have printed paper labels.
Think this machine might’ve been a real “what’ve we got left at the back of the warehouse, Barry?” job! Serial is A1 4003267
- Blitter is a separate IC, just under the right-hand VME ribbon
- ROM type headers are present and have jumpers fitted above the HI ROM
- An AJAX floppy controller is present, and the support GAL is the correct version for HD floppy support (although the drive itself is a DD Epson model. Can’t have it all I suppose!). The AJAX and GAL *might* be after-market, but the machine’s definitely still got its original FDD.
I’m still intrigued by the SPARE1 and SPARE2 sockets... Spare what, precisely?!
Oh and I just noticed - the two ICs at U8 and U9 are the same half-width as shown in the photo here, but they’re both labelled as “PRE QUAL”. And many more of my GALs have printed paper labels.
Think this machine might’ve been a real “what’ve we got left at the back of the warehouse, Barry?” job! Serial is A1 4003267