Search found 268 matches

by cheshirenoir
Thu Apr 13, 2023 12:36 am
Forum: Hardware
Topic: A new release of the MultiCart PCB
Replies: 4
Views: 842

Re: A new release of the MultiCart PCB

Tom, the two jumpers are to switch it to MKII mode.
by cheshirenoir
Tue Apr 11, 2023 12:19 pm
Forum: Hardware
Topic: A new release of the MultiCart PCB
Replies: 4
Views: 842

A new release of the MultiCart PCB

Hey Folks, I've done a respin of the Multicart to make it more compact, and by using an evil hack, I've even made it so you can remove the ROM without needing to desolder. IMG20230410150432.jpg This is the new V2 release of the Multicart. Now small enough to fit inside a standard CreatiVision shell....
by cheshirenoir
Mon Apr 10, 2023 5:10 am
Forum: Hardware
Topic: Black Screen CreatiVision
Replies: 8
Views: 1140

Re: Black Screen CreatiVision

Haven't given up, not by a long shot. If I have to I'll see about rebuilding that circuit to test out of the board. Whatever is going on there, it's not happy. Actually, has anyone got a 700305 model (Early PAL with RF box on a riser) that can take a hi res photo of the top right corner? This is the...
by cheshirenoir
Mon Apr 10, 2023 3:42 am
Forum: Hardware
Topic: Cassette to USB
Replies: 2
Views: 675

Re: Cassette to USB

Also Mono, so we don't get to hear the dulcet tones of Dick Smith :-D

John
by cheshirenoir
Mon Apr 10, 2023 3:41 am
Forum: Homebrew software and hardware (excluding games)
Topic: Tiny Basic on Creativision
Replies: 5
Views: 1416

Re: Tiny Basic on Creativision

Hopefully faster than the BASIC cartridges were :-D

John
by cheshirenoir
Fri Apr 07, 2023 12:41 pm
Forum: Hardware
Topic: Black Screen CreatiVision
Replies: 8
Views: 1140

Re: Black Screen CreatiVision

That circuit around the clock is a mess! Currently both pin 39 and 40 of the TMS are being held high and I can see no oscillation of the crystal. The clock circuit winds through a different part of the circuit, and, of course, there's no silkscreen so I'm having to trace over both halves of the boar...
by cheshirenoir
Fri Apr 07, 2023 10:57 am
Forum: Hardware
Topic: Black Screen CreatiVision
Replies: 8
Views: 1140

Re: Black Screen CreatiVision

Solder joints are dull, and I think this may have been a "friday afternoon special". Most of the vias wren't flowed all the way through, and the same applied to many of the legs of components. There was pits and cavities in many of the solder blobs too. No obvious other hints of corrosion. I've sinc...
by cheshirenoir
Fri Apr 07, 2023 9:24 am
Forum: Hardware
Topic: Black Screen CreatiVision
Replies: 8
Views: 1140

Re: Black Screen CreatiVision

OK it looks like there are some significant degredation of the vias on this board. I've been bodging and fixing all day.
Fixed three address lines and two data lines and now I have activity all over the place. Still no picture though.
by cheshirenoir
Fri Apr 07, 2023 2:00 am
Forum: Games programming
Topic: New Game for you, Turmoil for Creativision
Replies: 5
Views: 1273

Re: New Game for you, Turmoil for Creativision

Awesome work, Mobsie!
At this rate i'm gonna need to do another spin of the multicart with an even bigger ROM :-D

John
by cheshirenoir
Sun Apr 02, 2023 5:59 am
Forum: Hardware
Topic: Black Screen CreatiVision
Replies: 8
Views: 1140

Black Screen CreatiVision

So I've been working on my CreatiVision. So I have fixed Phi by finding a trace broken. Similar on the NMI (Which wasn't being pulled up) traced to a bad via. I've also fixed the trace I broke. (Whoops!) Now I'm stuck with all Address lines pulled high, and all but D0 pulled high on Data. Phi in and...