Search found 436 matches

by Silvester
Sun Mar 12, 2023 7:47 pm
Forum: General QL Chat
Topic: IQLR Scans
Replies: 26
Views: 12537

Re: IQLR Scans

by Silvester
Sun Mar 12, 2023 2:56 pm
Forum: General QL Chat
Topic: IQLR Scans
Replies: 26
Views: 12537

Re: IQLR Scans

I found an interesting advert on a Miracle Systems card I never knew existed: Page 9 of the March/April 1996 has a full-page Miracle Systems advert for a "QXL Gold" card that apparently allowed you to adapt a Miracle Gold or SuperGold card to a 16-bit ISA PC bus and use it in a PC/AT, jus...
by Silvester
Tue Dec 13, 2022 4:37 pm
Forum: Software & Programming
Topic: Perspective 3D Graphics
Replies: 49
Views: 8734

Re: Perspective 3D Graphics

You already have them at your disposal; FPIC_SAVE and FPIC_LOAD. They just call the system window save/restore routines.
by Silvester
Mon Oct 17, 2022 5:43 am
Forum: Hardware
Topic: QSound and QPrint Interface
Replies: 185
Views: 65900

Re: QSound and QPrint Interface

Works fine from any expansion slot, everything else OK as far as I have tried it. The only thing that is a bit odd is PLAYING function breaks Basic with 'channel not open' if PLAY never initiated, rather than 0 or ERR_NO returned from function. Suggestion: use PB1 output for selection of 'chip' (wir...
by Silvester
Wed Oct 12, 2022 7:07 pm
Forum: Hardware
Topic: QSound and QPrint Interface
Replies: 185
Views: 65900

Re: QSound and QPrint Interface

I didn't wire to expansion SP0-SP3 but to DIP switches so I could force slot location and test direct access. But if the QSOUND device does not add too much overhead on slow 68008 QL then it could be argued we never need to know where it is in address map. OTOH... Before Super Gold card arrived with...
by Silvester
Tue Oct 11, 2022 12:42 am
Forum: Hardware
Topic: QSound and QPrint Interface
Replies: 185
Views: 65900

Re: QSound and QPrint Interface

Got it working from EPROM by making a couple of changes to hardware. DSL to pin 1 & 2 of 74LS03 (address decode). E to pin 12 & 13 of 74LS03, output pin 11 to pin 4 of 74LS03 (gate VPAL). I can only guess this is what tracks might do under 74LS03, puzzling thing is there would be no pull up ...
by Silvester
Mon Oct 10, 2022 3:14 pm
Forum: Hardware
Topic: QSound and QPrint Interface
Replies: 185
Views: 65900

Re: QSound and QPrint Interface

Well, what happens if you load the ROM file into RAM and execute it using "call x+46"? It should then shadow the device in ROM so it's not used anymore. Well, it all works :) PLAY and QSOUND device perform as expected. (I removed EPROM and loaded image into RESPR) I was using JS rom on 12...
by Silvester
Mon Oct 10, 2022 3:20 am
Forum: Hardware
Topic: QSound and QPrint Interface
Replies: 185
Views: 65900

Re: QSound and QPrint Interface

Hm, the device should never hang, so this is at least strange or a bug in the device. v1.93 rom hangs QL on both these Basic commands: OPEN#3;QSOUND BGET#3,a OPEN#3;QSOUND BPUT#3;1,2,3,4,5,6,7,8,9,10,11,12,13,14 On QPC2 you get err_bp for BGET, with expected noisy output on BPUT. (BTW your device c...
by Silvester
Mon Oct 10, 2022 3:18 am
Forum: Hardware
Topic: QSound and QPrint Interface
Replies: 185
Views: 65900

Re: QSound and QPrint Interface

Have you problem with play command? any "out of range error"? Yes, I almost always get that error. PLAY 'CDEFGAH' is always accepted (but of course no sound). PLAY 'v8CDEFGAH' sometimes just plays scale (but not always) PLAY 'v10CDEFGAH' always complains 'out of range' (as do all other co...
by Silvester
Sun Oct 09, 2022 3:25 am
Forum: Hardware
Topic: QSound and QPrint Interface
Replies: 185
Views: 65900

Re: QSound and QPrint Interface

I got my hardware working OK, using PB1 spare output to switch between default 0.75Mhz and 2MHz AY clock. But QSOUND device on v1.93 rom seems to be tripping up my player. I did a 'crafty' (that'll teach me ;) ) way of detecting whether output channel was to PSG file or the QSOUND device by looking ...