The Sinclair QL Forum

stephen_usher wrote: ↑Sat Jul 13, 2024 8:58 pm Yay! Done! Working!

Nice one - Always good when you get a win

Did you not fancy putting the latch into the GAL as well? You have spare pins, but you would need to free up pin 1 as a clock input, feed it from the select output for the 175 latch, and WinCUPL should select combinatorial mode, as you have both registered and non registered logic then.

I am able to read and write Floppies using a USB floppy drive on Windows 11 Pro. Always worked on Windows 7, and XP and Windows 2000 and NT4 and 98/95 too. I keep a couple of old Windows machines just in case of such compatibility issues - as my 2 large programmers only support upto XP, and ZIP driv...

I am wondering if relying on the input / output labels to do the negation is not working.

FDC select is active only when DSL (OE) is low, and CE is low (capsule selected) and A14 and A13 are both high

What logic compiler are you using?

I have 2 programmers that can program the 8749, and an eprom eraser too. I could program up an 8749 for you. Thanks for the offer Pr0f I won't have the chip for a week or so, and have no idea if it's "good", so if I can't find a programmer (or Hermes) in the meantime I'd really like to ta...

I have 2 programmers that can program the 8749, and an eprom eraser too.

I could program up an 8749 for you.

In the Qimsi mode (just boot from a different micro SD card without the files that make it work like a gold card), it will be compatible with almost anything that doesn't use the ROM port or it's address space from 0x0C000-0x0FFFF. And I say almost - because if your device provided a Win type device...

yes - that would be - A ROM would be even better

Many thanks David.

From Murray McCabe's web link (Binary dinosaurs) https://binarydinosaurs.co.uk/Museum/icl/murraywriteup.php It was these 2 that got my interest: 5.3 DATA COMMUNICATIONS ADAPTOR (DCU) - BT Reference 1887 This was provided for the Tonto by BT. It connects via a ROMPACK capsule slot, is powered from th...

David, you wouldn't have any notes on how someone might add a UART device to the OPD by any chance? - documentation that survives in the public domain is a little sketchy - and I know of at least one interface with a UART device in it that plugged in via cartidge. It would seem to be a useul additio...