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A few of us once talked of such a thing... Perhaps @Zane Kaminski might jump on board with a fresh design - I know a 1mb L2 would sell like hot cakes

Mouser also sell 4-pin mini din sockets that fit perfectly.

Thanks to @RetroTheory , the case has arrived! I've not unpacked it yet, i've had 0 time to deal with any projects lately, I'll need to recap the Motherboard before I go ahead with the build, just to make sure the board I want to put in there actually works! 😅

Have you got any super hi res images of the card we can use to spot anything visually wrong?

So...how close are these to release? ;)

You do need a minimum of 1MB (in Bank A) for anything to really happen, as the built in video needs something to use.

Y4 should be a simple 2 pin 32.768KHz crystal (not an oscillator), if you're not getting anything from that at all when power is applied, that means the RTC won't be running, and won't be generating the 1second pulse output, or sending any data to the VIA. Although that may not have too much of...

I have to say, that is insanely clever!

Ah sorry you wont have the MDU or RBV, i was thinking of the IIci there - the E clock is the fixed 783KHz clock used for peripheral timing. It's the bus clock speed divided by 10, typically. So it may be 1.56672MHz.

Yes, you qualify! Entry isn't excluding any member at all!

Have you checked for the presence of the clock signals at the cpu, gluechip, mdu, rbv, oscillator output and also the E clock?

Line over means active low :)

UA15 and UB15 are the 20-pin PLCC 'SND' Chips (left and right channel) - Apple P/N 343S0045-B (Made by Sony though). It's the one actually responsible for sound output, but also functions as /RESET (or /RST) for the CPU. Pin 6 is the active low reset signals, with UB15 being responsible for...

This might be a good candidate for a reloaded Analogue board from @Kay K.M.Mods :)

Oooh, good composition!

Check the Sony SND chip for what it's doing with the /RESET line :)

Yah - UC4 is one of the 26LS30's - not vital unless you need that serial port. Have you got a spare ADB chip (UA13) or RTC Chip (UK14)? You can grab these off a dead Classic board if needed. I'd be interested to know if you replaced Q2, or measure what voltage it outputs when you apply power to...

How hot do the SCSI and SWIM chips get with power on?

How about some software release dates? Took a few days to compile this and get as accurate as I could with these! MS-DOS release dates: 1.0 - 12th August 1981 2.0 - 8th March 1983 3.0 - 14th August 1984 3.3 - 24th July 1987 (First retail release, included some FAT16 support) 4.0 - 6th November...

25 July 1961 - Sinclair Radionics founded by Clive Sinclair 19 Sep 1973 - Sinclair Instrument founded by Clive Sinclair (Later became Science of Cambridge 31st Dec 1977, Sinclair Computers 31st Dec 1980, Sinclair Research 1st Jan 1981) 5 December 1978 - Acorn Computers founded by Chris Curry &...