Search found 4715 matches

by exxos
Fri Sep 21, 2018 6:20 pm
Forum: STF REMAKE PROJECT
Topic: Video connector un-f*ck
Replies: 22
Views: 897

Re: Video connector un-f*ck

I've ordered 10 boards, paid for DHL delivery to UK. So hopefully get them in about a week. I've been fighting with OSH site for the past 2 hours :roll: It won't accept my Gerber files, keep saying outline missing, when it isn't. Finally gave up and emailed their support, only to get an automated re...
by exxos
Fri Sep 21, 2018 5:55 pm
Forum: ALPHA USER BUILDS
Topic: Icky - Progress
Replies: 667
Views: 17338

Re: Icky - Progress

What I find odd is that the VPA and CS are 500mV Thats switching noise.. I wouldn't pay to much attention to it right now... Put your scope on 5V/div like the E clock... Because the machine crashes, it many only pulse VPA once, so you might have to setup a trigger on your scope to trigger on VPA pu...
by exxos
Fri Sep 21, 2018 4:42 pm
Forum: ALPHA USER BUILDS
Topic: Icky - Progress
Replies: 667
Views: 17338

Re: Icky - Progress

Icky wrote:
Fri Sep 21, 2018 4:36 pm
I think there might be a problem with CS line (possibly my soldering - I never rule out my soldering as the first issue) as E on ACIA is ok but CS is floating around 200mV on both ACIAs.
This is the route if it helps..

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by exxos
Fri Sep 21, 2018 4:31 pm
Forum: ALPHA USER BUILDS
Topic: Icky - Progress
Replies: 667
Views: 17338

Re: Icky - Progress

Forgottenmyname wrote:
Fri Sep 21, 2018 4:18 pm
Yeah I think I'll modify my cable too as the rest of my Atari stuff is UBE
Don't know if it be easier to remove the socket and hardwire back that based on my pcb than mod the cable ?
by exxos
Fri Sep 21, 2018 4:16 pm
Forum: ALPHA USER BUILDS
Topic: Icky - Progress
Replies: 667
Views: 17338

Re: Icky - Progress

So I wondered if Icky or exxos know which 3 pins to swap and I'll see if I can once again join the fun with the diagnostics :D Theres 3 pins which are the same, they rest are wrong.. This post show the swapping needed, but Icky did a new cable to fit... https://www.exxoshost.co.uk/forum/viewtopic.p...
by exxos
Fri Sep 21, 2018 3:43 pm
Forum: STF REMAKE PROJECT
Topic: Goodies which arrived today...
Replies: 2
Views: 164

Goodies which arrived today...

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by exxos
Fri Sep 21, 2018 3:40 pm
Forum: ALPHA USER BUILDS
Topic: Icky - Progress
Replies: 667
Views: 17338

Re: Icky - Progress

Its pretty much, after /AS goes low..

VPA GOES LOW, VMA GOES LOW, E GOES HIGH..
VPA GOES HI, VMA GOES HI, E GOES LOW..

I would assume its OK if they all switching anyway.. But check E and CS on the ACIA chips themselves..
by exxos
Fri Sep 21, 2018 3:35 pm
Forum: ALPHA USER BUILDS
Topic: Icky - Progress
Replies: 667
Views: 17338

Re: Icky - Progress

/as on its own doesn't really mean anything.. VPA,VMA,E,650CS Are the important ones.. But need to check each vs vpa so need 2 channels to check..
by exxos
Fri Sep 21, 2018 3:02 pm
Forum: ALPHA USER BUILDS
Topic: Icky - Progress
Replies: 667
Views: 17338

Re: Icky - Progress

I've checked the acia and mfp circuit and looks good.. Just have to check ram with diagrom next I think..
by exxos
Fri Sep 21, 2018 1:01 pm
Forum: STF REMAKE PROJECT
Topic: New video connector ?
Replies: 26
Views: 1151

New video connector ?

As a thought about how annoying the video connector is solder, and the limited number of pins etc.. I was half wondering if you the motherboard should go with the Falcon style connector instead ? Courses does also mean the problem of sourcing suitable connectors.. We could just simply go with a norm...