Search found 1629 matches

by Dave
Mon Feb 19, 2018 11:54 pm
Forum: For Sale
Topic: Trump Card 768K - no cover/heatsink
Replies: 3
Views: 283

Re: Trump Card 768K - no cover/heatsink

I'll take it. Can you PM me a shipping quote to Texas, 78664? Slow method is fine. Or send me a paypal invoice to my personal email?
by Dave
Mon Feb 19, 2018 7:17 pm
Forum: For Sale
Topic: Incomplete Rebel backplane unit
Replies: 3
Views: 287

Re: Incomplete Rebel backplane unit

Did you happen to capture a schematic of it before you sold it?
by Dave
Sun Feb 18, 2018 11:21 pm
Forum: General QL Chat
Topic: Online Chat Event: Saturday, 8pm!
Replies: 5
Views: 179

Re: Online Chat Event: Saturday, 8pm!

Yes, UK time...
by Dave
Sun Feb 18, 2018 10:41 pm
Forum: General QL Chat
Topic: Online Chat Event: Saturday, 8pm!
Replies: 5
Views: 179

Online Chat Event: Saturday, 8pm!

I'll be explaining my, err, new thing, and doing a live video feed to demonstrate it. It is pretty cool.

Be there or be somewhere else.
by Dave
Sun Feb 18, 2018 4:09 pm
Forum: General QL Chat
Topic: QL 34th Anniversary new hardware.
Replies: 83
Views: 4423

Re: QL 34th Anniversary new hardware.

That feeling when you get out your PLCC-20 to DIP-20 adapter to program a GAL, and it's..... DEFECTIVE. And you look online, and you could have one tomorrow, but it'll be $150, plus $40 shipping. Or you could order one from China, but it'll be 21+ days. So you buy a PCB printer CNC milling machine. ...
by Dave
Sun Feb 18, 2018 1:22 am
Forum: General QL Chat
Topic: QL 34th Anniversary new hardware.
Replies: 83
Views: 4423

Re: QL 34th Anniversary new hardware.

Excitement's rising here... Things are coming together nicely. Might have something big (the biggest yet, anyway) to announce on Wednesday!
by Dave
Sat Feb 17, 2018 2:49 am
Forum: Hardware
Topic: All RAM chips destroyed??
Replies: 56
Views: 2732

Re: All RAM chips destroyed??

Your comments about the 8302 make it highly suspect. The 8302 is on the data bus, plus A0, A1 and A5. It receives keyboard input from the 8049. If active when video is being read out, it would create this type of shimmery stipple pattern, and its data connections are tri-state. I've seen a lot of th...
by Dave
Sat Feb 17, 2018 2:22 am
Forum: Hardware
Topic: All RAM chips destroyed??
Replies: 56
Views: 2732

Re: All RAM chips destroyed??

And you say this had AH ROMs? It looks like maybe the required mods either haven't been done, or have been done incorrectly? Explanations: pull-up/pull-down : A pin may be shorted (even intermittently) to GROUND (pulled down) or to 5V (pulled up). It could just become disconnected (open circuit, or ...
by Dave
Fri Feb 16, 2018 5:27 pm
Forum: Hardware
Topic: The danger of browsing the net at work...
Replies: 3
Views: 157

Re: The danger of browsing the net at work...

Was just really ill, waiting for my hands to get really steady again. Also, recalibrating reflow oven. Takes ~20 hours. The waiting is killing me! I had a stomach bug so bad that I apparently also had that H3N2 killer flu, but just thought I had the sniffles.Fever broke Wednesday, today is my first ...

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