Search found 130 matches

by ones' complement
Tue Apr 16, 2024 7:56 pm
Forum: Hardware
Topic: Gold Card Battery
Replies: 3
Views: 1879

Re: Gold Card Battery

Provides battery backed clock and a few unused bits in RTC chip hold settings for AUTO_TK2F1 (boot automatically as if you pressed F1 with TK2 extensions enabled, AUTO_TK2F2 for F2, AUTO_DIS cancels). Also SCR2EN/SCR2DIS for second screen and FLP_JIGGLE (fix for some drives). IIRC only 4 bits, but C...
by ones' complement
Sun Apr 14, 2024 3:59 pm
Forum: Online Auctions
Topic: QL Cartridges lot on Ebay
Replies: 17
Views: 482

Re: QL Cartridges lot on Ebay

Sparrowhawk wrote: Sun Apr 14, 2024 1:36 pm Anelpum Quat - it rings a bell.
Subliminal? anagram of Quantum Leap :)
by ones' complement
Sat Apr 13, 2024 9:23 am
Forum: Hardware
Topic: Q40/Q60
Replies: 32
Views: 8948

Re: Q40/Q60

Same item in UK

Edit: (to save another post in this thread). I find Amazon's search for products useless, too often I only find what I want when I do it in a roundabout way.
by ones' complement
Thu Apr 11, 2024 4:31 pm
Forum: Hardware
Topic: Q40/Q60
Replies: 32
Views: 8948

Re: Q40/Q60

Peter wrote: Thu Apr 11, 2024 1:10 pmDid you find any info about the graphics?
No, anticipating when it's on github. Guess would be graphics card in ISA slot.
by ones' complement
Thu Apr 11, 2024 12:49 pm
Forum: Hardware
Topic: Q40/Q60
Replies: 32
Views: 8948

Re: Q40/Q60

It has been said that OSSC converters can provide that, if they are well tuned. But one has to be careful about the various variants. Also I find them clumsy and expensive. I have tried OSSC and gbs-control on Q60 and I could not find a setting on either that would successfully display the full Q60...
by ones' complement
Thu Apr 11, 2024 10:27 am
Forum: Hardware
Topic: Q40/Q60
Replies: 32
Views: 8948

Re: Q40/Q60

For those cRaven something like a Q60 ?
by ones' complement
Tue Apr 09, 2024 12:27 pm
Forum: Hardware
Topic: New microdrive internal replacement
Replies: 147
Views: 1025158

Re: New microdrive internal replacement

:o over 1 million views in 7 months
by ones' complement
Sat Apr 06, 2024 4:22 pm
Forum: Hardware
Topic: FPGA replacment for the ZX8301 ULA and more
Replies: 262
Views: 99519

Re: FPGA replacment for the ZX8301 ULA and more

PCEN peripheral chip enable. Surely any ZX8301 replacement will need to provide it for ZX8302 on pre issue 6 QLs (also TXOE).
by ones' complement
Fri Apr 05, 2024 5:45 pm
Forum: Hardware
Topic: FPGA replacment for the ZX8301 ULA and more
Replies: 262
Views: 99519

Re: FPGA replacment for the ZX8301 ULA and more

I'll reconsider the expansion port but new pcb from the begining and new tests ... : :cry: Ah, it was only theoretical question not practical. Your achievement this far has been tremendous 8-) I have to admit that there is a problem with those red tall cpu sockets They are very flaky, easily splitt...
by ones' complement
Fri Apr 05, 2024 1:40 pm
Forum: Hardware
Topic: FPGA replacment for the ZX8301 ULA and more
Replies: 262
Views: 99519

Re: FPGA replacment for the ZX8301 ULA and more

Curiosity has got the better of me so please excuse naivety. Re using expansion bus:

For issue 6 the HAL deals with PCEN (pcen = a16 * /a17 * /a6 * dsmc)

On issue 5 and earlier, wouldn't it be possible to drop in simple decode board for PCEN and TXOE (ZX8302).