Search found 2518 matches

by Dave
Wed Nov 04, 2020 8:24 pm
Forum: General QL Chat
Topic: 700th Member
Replies: 4
Views: 248

Re: 700th Member

Asking Silent* to say hello is.... ironic.
by Dave
Mon Nov 02, 2020 8:45 pm
Forum: QL Emulation
Topic: QL on the Raspberry Pi...?
Replies: 23
Views: 2218

Re: QL on the Raspberry Pi...?

The Pi 400 with emulator will be much faster than a Q68, and half the price. While there's something satisfying about real hardware, for plain performance and ease of access, this Pi 400 is going to be a real boon. Just waiting for the all black model to be released in February. Pink is not my thing.
by Dave
Sun Nov 01, 2020 8:16 pm
Forum: Hardware
Topic: QSound and QPrint Interface
Replies: 71
Views: 11196

Re: QSound and QPrint Interface

Indeed. I was only thinking about it from the POV of a few simple S*BASIC extensions.
by Dave
Sun Nov 01, 2020 7:51 pm
Forum: Hardware
Topic: QSound and QPrint Interface
Replies: 71
Views: 11196

Re: QSound and QPrint Interface

Eeeexcellent...... :D

I'll email you when I have hardware. Should I implement space for a ROM, or will a driver be loaded?
by Dave
Sun Nov 01, 2020 7:34 pm
Forum: Hardware
Topic: QSound and QPrint Interface
Replies: 71
Views: 11196

Re: QSound and QPrint Interface

I have a pile of counterfeit AY-3-8910 chips I'd like to use up. They're actually brand new working YM2149 that were remarked, and are likely from the exact same batch as the ones Ben Versteeg at ByteDelight is using. If you tell me what register base address you selected I can throw out a bunch of ...
by Dave
Mon Oct 26, 2020 7:01 pm
Forum: Hardware
Topic: QL Mainboard mechanical drawing
Replies: 5
Views: 537

Re: QL Mainboard mechanical drawing

I've been through all the machines in the house and not found it yet. I have two machines in storage that it might be on. I'll dig them out.
by Dave
Sat Oct 24, 2020 9:01 pm
Forum: Hardware
Topic: motherboard mod
Replies: 6
Views: 452

Re: motherboard mod

It has nothing to do with NTSC. It simply improves the 15 MHz clock fed to the 8301. The US QL has a JSU ROM which sets the NTSC bit in the 8301's register. This converts TV mode to NTSC with a lower resolution and repositioning of windows. Replacing it with a plan JS or Minerva ROM restores normal ...
by Dave
Sat Oct 24, 2020 8:40 pm
Forum: Hardware
Topic: motherboard mod
Replies: 6
Views: 452

Re: motherboard mod

It's Samsung's mod to buffer the 15 MHz clock signal.
by Dave
Wed Oct 21, 2020 5:15 am
Forum: Hardware
Topic: QL Mainboard mechanical drawing
Replies: 5
Views: 537

Re: QL Mainboard mechanical drawing

I did this in around 2004. It’s a couple of computers ago, but if the file still exists I’ll find it. It also included variations of positions of internal connectors.
by Dave
Sat Oct 17, 2020 10:21 pm
Forum: Hardware
Topic: Mister QL
Replies: 27
Views: 1696

Re: Mister QL

QL-SD is definitely one of Peter Graf’s most outstanding innovations. I don’t know where I’d be without mine.