I remember being slightly "gob smacked" when Wolfgang showed me this at the 40th celebration, wired up to mouse, keyboard and monitor and working! Although it is an interface to the Black box QL, it is fully capable of running autonomously as a complete computer.
Search found 1334 matches
- Thu May 30, 2024 8:23 am
- Forum: QL Emulation
- Topic: A small QL
- Replies: 60
- Views: 9742
Re: A small QL
- Tue May 28, 2024 5:58 pm
- Forum: Hardware
- Topic: MicroP Controller with Minerva Issue
- Replies: 15
- Views: 315
Re: MicroP Controller with Minerva Issue
possible issue with the edge connector (like a pin that's bent and shorting out maybe?)
- Tue May 28, 2024 5:07 pm
- Forum: Hardware
- Topic: MicroP Controller with Minerva Issue
- Replies: 15
- Views: 315
Re: MicroP Controller with Minerva Issue
ah - so the JM and Minerva ROM's are in 2 different QL's ?
- Tue May 28, 2024 4:13 pm
- Forum: Hardware
- Topic: MicroP Controller with Minerva Issue
- Replies: 15
- Views: 315
Re: MicroP Controller with Minerva Issue
The only possibility I can think if is if your Minverva also has TK2, and the floppy interface is set for the ROM port address...
- Sat May 25, 2024 2:32 pm
- Forum: Hardware
- Topic: Faulty (video) ram
- Replies: 25
- Views: 683
Re: Faulty (video) ram
Nice one
- Sat May 25, 2024 2:11 pm
- Forum: Hardware
- Topic: Faulty (video) ram
- Replies: 25
- Views: 683
Re: Faulty (video) ram
Well done on the progress with the DRAMS - so now probably just a single faulty chip?
- Sat May 25, 2024 2:11 pm
- Forum: Hardware
- Topic: Faulty (video) ram
- Replies: 25
- Views: 683
The QL motherboard has pin 1 and pin 28 wired to 5V - so the 'expected' A15 signal is not on that pin - instead it's used as a chip select for the ROM's - the ROM's in the QL ROM set - one is active high and one active low - so A15 decodes whether lower 32K or upper 16K rom are selected. Either ROM ...
- Wed May 22, 2024 9:14 pm
- Forum: Hardware
- Topic: Faulty (video) ram
- Replies: 25
- Views: 683
Re: Faulty (video) ram
that could be down to either a ram chip not being writable (Data in on the RAM shorted or open circuit), or to a shorted or open address line on the DRAM chips - the regular pattern also suggests something like this. Such problems are hard to find. As you have surmised - the upper and lower banks ar...
- Mon May 20, 2024 11:28 pm
- Forum: General QL Chat
- Topic: Anouncement for the 40th Anniversary of the Sinclair QL in Dormagen (Germany)
- Replies: 50
- Views: 7764
Re: Anouncement for the 40th Anniversary of the Sinclair QL in Dormagen (Germany)
those current draws are favourable. Letterbox - just that a keyboard and LCD screen combo may be a good way to do this - as it's one single case to make - no hinges. The letterbox LCD screens are available with HDMI input - but the resolutions are a bit strange - they are usually 400x1280 or 480x192...
- Mon May 20, 2024 9:26 pm
- Forum: General QL Chat
- Topic: Anouncement for the 40th Anniversary of the Sinclair QL in Dormagen (Germany)
- Replies: 50
- Views: 7764
Re: Anouncement for the 40th Anniversary of the Sinclair QL in Dormagen (Germany)
Thoughts from the 40th QL Celebration. It was a late decision for me to attend the 40th Anniversary celebration in Dormagen, but I am glad that I did make that decision. Having been in and out QL ownership over most of those years, but strangely always having a couple of Sinclair products in my hous...