The Sinclair QL Forum

On another look at them - yes all 27(x)128 - so 16K size. I thought I'd spotted a 27256 in there - but just my dodgy eyes! :-) Looks like 4 of my eprom's aren't supported by the programmer (2 x Intel, 2 x Fairchild), but at least I now know what to look for when I want some more I still have 4 to b...

So not being familiar with the 68K/OS other than to boot the 32K rom image on Qemulator, I take it it supports a ROM disk - do you know what size this can be? Are there any requirements for a ROM image such as header, location in the memory map, etc. ? Hi Pr0f, Yes, a ROM Disk It seems to be a choi...

The 16K ROM works on the real thing!

I guess the next thing, when I can find the time, will be to try the full 32k ROM split over 2 x 16K

The OS bin is 32kb, I'm talking about making a 16kb ROM of some of the utilities MD (as Medusa, on German forum, couldn't get my 32kb version to run from real ROMs) I understand. And how many were the utilities in cartridges? Utility cartridge = 17 files totalling about 42kb The ASM cartridge = 10 ...

This is the 16K MD Utility ROM, tested only in q-emuLator so far Just in case someone with a 68K/OS board wants to give it a go in a real ROM before I get a chance (I've got to learn to use the programmer yet!) Contains BAUD, COPY, DELETE, FORMAT, IOSSMENU, MEMMAP, RENAME, SPACE & ERRMSG.PROC 68...

chriskgnr wrote: ↑Sun Jun 02, 2024 9:16 am

t0nyt wrote: ↑Sun Jun 02, 2024 7:10 am Many thanks, next up will be to try and burn a 16k version of the 68k/os utility Rom

Is there a 16k version of the 68k/os rom?

The OS bin is 32kb, I'm talking about making a 16kb ROM of some of the utilities MD (as Medusa, on German forum, couldn't get my 32kb version to run from real ROMs)

Peter wrote: ↑Sat Jun 01, 2024 9:57 pm

t0nyt wrote: ↑Fri May 31, 2024 6:45 pm Could I ask if this case fits a QIMSI Gold with Realtime Clock option please?

Unfortunately not. There is space on top where it is useless, but not on the bottom where the clock would sit.
You might want to contact QLobi, he is often willing to do changes.

Thanks Peter, will do

Pr0f wrote: ↑Sat Jun 01, 2024 9:24 pm On another look at them - yes all 27(x)128 - so 16K size.

I thought I'd spotted a 27256 in there - but just my dodgy eyes!

Many thanks, next up will be to try and burn a 16k version of the 68k/os utility Rom

Probably all of those! Mixture of speeds and sizes there! I've used 27 and 27C (cmos) varieties. On a stock QL - the 200ns parts should be ok. I've also used 32K and 64K flash chips with eprom pinout too Thanks Pr0f Have just been searching thru parts lists on the web to see what I actually have. I...

Are any of these EPROM likely to be ok for any QL use please?

I currently want to use them with the 68K/OS board

Any thoughts greatly appreciated please

EDIT: as will be obvious I know nothing about EPROM's


Many thanks