Search found 1307 matches
- Tue Jan 25, 2022 12:53 pm
- Forum: Hardware
- Topic: Monitor repairs
- Replies: 9
- Views: 1988
Re: Monitor repairs
The problem with a lot of these monitor designs is that temperatures within the monitor are elevated, and so this affects capacitors - likelyhood is that they will be rated for 85C rather than the more expensive 105C, which whilst it is probably 'enough', is still a stress factor. Added to that the ...
- Tue Jan 25, 2022 7:47 am
- Forum: Hardware
- Topic: Monitor repairs
- Replies: 9
- Views: 1988
Re: Monitor repairs
I used to take my CRT monitors to a place in Stevenage - but that was a long time ago - not sure if he'd still be there after all this time. I am guessing due to size and weight you are going to want to find someone local to fix them. Somethings you could try - particularly if the monitors have been...
- Sun Jan 16, 2022 7:10 am
- Forum: General QL Chat
- Topic: CRT syncing issue, any ideas?
- Replies: 10
- Views: 3526
Re: CRT syncing issue, any ideas?
You were lucky you didn't cook off all your chips - most of them will tolerate 6V - but no that much more...
- Fri Jan 14, 2022 7:17 am
- Forum: The Off-Topic Section
- Topic: Happy Birthday!
- Replies: 437
- Views: 221390
Re: Happy Birthday!
To be fair to Sir Clive - an awful lot of other Software companies and some hardware companies have done the same thing since, not that this excuses the late delivery - but I was very happy with mine when it came
- Thu Jan 13, 2022 12:21 pm
- Forum: The Off-Topic Section
- Topic: Happy Birthday!
- Replies: 437
- Views: 221390
Re: Happy Birthday!
What was the actual "Release date" ? ;-) I remember picking up my first QL - a JM ROM version, back in middle of 1985, along with a TV / Monitor, and then buying a proper Philips monitor about a year later to get the full scan width in... An upgrade of ROMS to JS followed soon after too...
- Tue Jan 11, 2022 8:10 am
- Forum: The Off-Topic Section
- Topic: Happy Birthday!
- Replies: 437
- Views: 221390
Re: Happy Birthday!
Happy Birthday Dave
- Wed Jan 05, 2022 2:59 pm
- Forum: Hardware
- Topic: Green Screen problem and poss. a new ROM.
- Replies: 10
- Views: 2256
Re: Green Screen problem and poss. a new ROM.
What I am trying to say is that Minerva may return from the test (passed) with a lesser amount than 128kBytes and go on to boot. Tobias Agreed - it does say this in the Minerva manual - and warns you may end up with not very much RAM if this happens! My guess is that if the faulty RAM is in the fir...
- Sun Dec 26, 2021 9:21 am
- Forum: Hardware
- Topic: USB Keyboard IF
- Replies: 38
- Views: 8385
Re: USB Keyboard IF
As your matrix switch is actually a 12x8 - that gives you 4 extra lines not in the 8x8 matrix - so you have some spare lines for those awkward control keys - as you can't put diodes inside the chip's matrix.
- Sun Dec 26, 2021 9:15 am
- Forum: Hardware
- Topic: USB Keyboard IF
- Replies: 38
- Views: 8385
Re: USB Keyboard IF
Pr0f, anything particular you want me to test? So far I only tested the basic combinations with CTRL (e.g. CTRL + arrow left) and with SHIFT. This works well. I do not have a Hermes, so I can not test Hermes specific things. Peter, fully understand your demand. Probably this is useful to you: http:...
- Wed Dec 22, 2021 11:13 am
- Forum: Hardware
- Topic: USB Keyboard IF
- Replies: 38
- Views: 8385
Re: USB Keyboard IF
Nice project - does it deal with CRTL, ALT and SHIFT keys and combinations of those with other keys - the IPC code has some special cases - particularly with the HERMES IPC replacement - that you may want to handle.