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So....Dual 7457's...overclocked to 1.2GHz @ 1.3v by the infamous herd - will shortly be headed my way for my QS board ;)

The test was not a failure - it was an alternative working mode! It proves that there's LIFE, JIM!

@JDW My previous employer was a firm called iSOS. Despite the horror stories from that place, they DID have a few very talented FileMaker guys employed there - who could certainly help - even an initial email conversation with them might be worth it. Filemaker Pro 12 is very, very old, I was...

A 16MHz '000 is half the speed of the '030 at 16MHz - the '030 has some L1 cache at least, and it does more work, per cycle.

I do hope that's not a professional modification! 😂 I can imagine the sales man giving it the smooth spiel - "Yeah, we make VIC-20's for schools, specially modified - juuuuust sign here on the dotted line for your order...we only ask for double the listing price" And when the purchasing...

...yikes! Someone attack it with a damp sponge! :D Were there any differences from the BBC other than presumably, the ROM?

Looks like i'm definitely heading to Cyprus for a week's R&R - where I plan to do as little as humanly possible...and enjoy every second!

@Melkhior Excellent question, i wondered that myself - but then i saw that IRQ is fed in by the 53C80 SCSI chip to GLU PIN 3 - i now realised i made a boo-boo by naming that one /IRQ or _IRQ in KiCAD. should just be IRQ, with the /IRQ being purely internal between gates...see, this is helping...

I never played Dune II, i was never really into the Dune universe until recently (thanks to Denis Villeneuve for that). What i'm grateful for though, is that Westwood went on to create Command & Conquer with that engine, iirc :)

Hey dude - sorry for the delayed response on this. Things like categories are still 'in flux' and are open to being tweaked. I'm the one responsible for the intial layout of the categories, so the blame/praise can land on my head! :D Initially, my though was this - I wanted a place that was...

@Mac84 IIRC had one or two of these - maybe he might know? :)

Hi! The Classic Reloaded is not available to the wider world quite yet - although, if you're based in the UK, I can send you a near final revision board that needs a trace cutting and two tiny bodge wires adding, then it works 100% fine - it's pre-populated with most of the passives on the...

As long as the firmware is updated, yes. Attached the firmware update :D

Just throwing this link in, as DV Warehouse has changed their site, and their search functionality is a bit crap: https://www.dvwarehouse.com/661-2254-apple-processor-module-for-power-mac-g4-400mhz-pci.html

SMD devices are, by their very nature, too small to carry conventional semiconductor type numbers. Instead, a somewhat arbitrary coding system has grown up, where the device package carries a simple two- or three-character ID code. Identifying the manufacturers' type number of an SMD device...

I feel like the Macintosh Portable is my spirit animal... 😂

... There, I tidied! Only took 4 hours! 😂

After Porchy from Jammaarcade got us across the finish line with reverse engineering the original HAL16L8, i thought the functions might be possible to replicate using discrete logic. This would of course be to benefit those that are making an SE Reloaded board, who don't want to, or can't...

PDF version of an article first released in Electronics & Wireless world, detailing how to interface the 68020 with the 68851 MMU unit. Written by David Jones & David Burns, both Motorola application engineers.

Actually... The logic on the Apple IIe card, is the Mega II chip and the IWM. That's literally it. The rest is 74LS series logic, a 65C02 CPU, a PROM and some DRAM. The Mega II is the Apple II on a chip. The schematics are available for a IIe, so...nothing really impossible - would just take...