The Sinclair QL Forum

You may all recall that a little over a year ago I was all "yeah, I'm gonna write a couple of GAMES! They'll be AWESOME!" and so on? Well, I got a good way into it, but I got really stuck, especially because I just ran out of time on an unexpanded QL. By that, I mean the game updated with ...

Today I ran a loop on an unexpanded QL in monitor mode (US model, has weird interrupts) and then with a 68EC020. 100 PRINT DATE$ 110 FOR loop = 0 to 100000 : NEXT loop 120 PRINT DATE$ It's a good timewaster. It just moves things around, takes a certain amount of time. Machine Time Bare QL 2m17s My 1...

That's absolutely right - my ultimate goal is simply a 32-bit QL. All 32-bit all the time. With what I have in place or upcoming, I know the following is achievable with light complexity/cost: 68EC020 @ 25MHz 'an amount' of 32-bit RAM -self-refreshing Minerva in 32-bit ROM (2x16) Floppy and IDE/Comp...

Absolutely, everything I am working on will be 'Open'... For most of the smaller projects I am happy to order PCBs and components and do assembly, then sell them myself and send half over to Rich at RWAP/SellMyRetro. Today I received in the mail two 68000s - one FN10 and one FN16. If I can get the T...

The card is now £380.

First, I understand that the SGC copies the OS ROM into a wide bus area, makes a couple of modifications to the image, then write protects that RAM and restarts the CPU booting from the faster, edited copy of the OS image held in RAM. The OS image in ROM is so narrow, and accesses to that range so f...

This post is aimed at the lay person, who hasn't ever designed hardware. So... One of the neat tricks of the 68EC020 is that it can use an 8, 16 or 32-bit bus. On the fly. The address decoder can be configured to not just select devices, but also let the CPU know the width of the data bus for that a...

£10, fixed, thanks!

I already had an email offer to buy it for £300 so I suspect it might go quite quickly.

Hi all, I've posted another fundraiser Gold Card on SellMyRetro.com. Yes, it's another reverse auction, too. Since the last one sold so quickly (five hours!), I'm starting this one optimistically high at £400, and will lower it £10 every day. (Rich, maybe you should offer a reverse auction option?) ...

Clock it at 24 MHz, and give it 16 MBytes of 32 bit wide SRAM to play with. Put a 32-bit wide Minerva image at $0, so you don't have to do SGC trickery. Try to figure out video since that's forced to be an 8-bit data bus :) Things I learned: it's slower at 25 MHz than 24 MHz due to inbuilt RAM timin...