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The high-end Sonnet G4 upgrade cards do NOT work with 0380 - 0383 ROM based 9600's. While Sonnet was still selling the last of their stock on their cards, I bought and returned something like 3 of the 1GHz G4 cards until we traced the issue to the unsupported OF version, which installing the...

The part number is a bit hard to make out on the side of the ROM card edge connector, but it is CELP2X60 Here's the specific part from the Burndy Microbus™ 50mil. datasheet: The same card edge connector is used for BOTH the ROM and the PCI/Storage connector on the bottom of the console. CELP.pdf

Yeah- that was exactly what I was thinking as well...

I was gonna order from digikey (part number 1092-1083-ND)- I was a bit confused about the top/bottom boot sector, but I'm not finding anyone using bottom... also not even sure if it even matters. I also did some test fitting, and while I'm not sure I will, it DOES appear that the GM PCB design...

Definitely watching this closely!

Got a SOP adapter in the mail today. I dumped my ROM chips directly this time as a 29F800 device. As expected, my programmer detects pins 43 & 44 (/WE & /RESET) as not connected- no surprise there of course. Dump matches existing per-chip dumps for the retail ROM. The data is split...

Heh, no worries- yes, I used the 1.2 PCB mostly, then compared it with the GM PCB to sort out the pinout and the reserved pins. While the GM seems the logical starting point for a reprogrammable/repro PCB, the retail design makes more sense to work from. I'm also not 100% sold on /ROM, but...

I don't believe there's any need to clone the GM ROM PCB, as all the functionality, save /WE (write enable) is implemented in the retail ROM PCB, and /WE can be enabled by soldering 4 wires, one to each FLASH chip on the PCB. I finished the tracing of the retail and the GM ROM and today. A few...

with the wider board, Is it going to run into the ethernet/usb jacks?

I personally wouldn't even have bothered supporting the zero, considering how slow it should be, given the 1MiB/sec was measured off a Pi3, and GPIO speeds are bound to the cpu speed, but who knows.... I'm working on a different style project using RaSCSI so don't worry, I won't be overlapping...

A little confused about the placement of the second set of mounting holes as they don't seem to line up with the PI mounting holes, or am I mistaken?

very nice!

Glad to see you using SMT instead of DIP Two suggestions: - Add a second set of board mounting holes that aligns to the Pi, to allow for spacers to keep the SCSI pins from getting anywhere near the conductive surfaces of the HDMI port and similar. - Use a right-angle SCSI connector such that...

Some relevant links I just grabbed: 1995: http://www.machack.com/mh95/95MacHackHome.html 1996: http://www.machack.com/Resources/index.html 1997: http://machack.com/Resources/hacks97.html 1998: https://web-beta.archive.org/web/20020214213053/http://www.machack.com:80/Hack98.html 1999...

I recall this as well- there was MacJive? I think it was called that came out one year that realtime translated any text rendered using toolbox calls in Jive. Might be interesting to track these hacks down...

OOOH I wasn't even wrapping my head around the unpopulated pin header there...

thru-holes? They're all in through hole DIP packages- just some are UV EPROMs and others are MASK ROM. What do you mean?

Can you get a shot of the inside of the back case, the underside of the logic board area, and a view of the edge connector inside the system? As far as the inside back case and underside of the logic board area go, I'm looking for the date code matrix. I'm also interested to see what version...

This is relevant to my interests... I've got a GM system, a preproduction Dev system, and two retail systems I've done some hardware hacks to to restore ADB, soft power on, and cd-rom emulation on one of my retails, but I've been looking closely at options for populating the onboard rom pads...