Search found 4959 matches

by exxos
Fri Feb 08, 2019 12:01 pm
Forum: HARDWARE ISSUES
Topic: STe booster v 1.5 36Mhz
Replies: 61
Views: 832

Re: STe booster v 1.5 36Mhz

My question would be, on machines with U101 installed, is that pull up still a requirement? I ask because my 40Mhz STE has U101 in place. I don't know, I don't have a working board to try it... But the same signal is on top of the GAL (/AS) PIn 3, so just put 1K on top of the GAL pin 3 to pin 24 (5...
by exxos
Thu Feb 07, 2019 6:03 pm
Forum: HARDWARE ISSUES
Topic: STe booster v 1.5 36Mhz
Replies: 61
Views: 832

Re: STe booster v 1.5 36Mhz

One hardware modification which seems to be needed is a 1K pull-up resistor on /AS.. IMG_3798.JPG I'm still working on the firmware but seem to have a small stability issue which I am looking into. It may be a bad connection somewhere.. But so far I have managed to copy files from the floppy to the ...
by exxos
Thu Feb 07, 2019 2:35 pm
Forum: HARDWARE ISSUES
Topic: STe booster v 1.5 36Mhz
Replies: 61
Views: 832

Re: STe booster v 1.5 36Mhz

Something is really unhappy with 36MHz :( So far I have created a new firmware which uses more like the V1 switching firmware. The problem is the ROM access drops dramatically from 309% to 233% and there is no way to speed this up any further. The simple GAL doesn't have enough IO pins or LA's to do...
by exxos
Thu Feb 07, 2019 12:07 pm
Forum: HARDWARE ISSUES
Topic: STe booster v 1.5 36Mhz
Replies: 61
Views: 832

Re: STe booster v 1.5 36Mhz

I tried my old ultrasatan, and it is not even recognised at 36MHz. Obviously something is unhappy somewhere on the STE. But there is not much I can do with the current GAL chip. The only possible solution I can see is to go back to the old V1 firmware and maybe use the STE's 32MHz clock again, but w...
by exxos
Thu Feb 07, 2019 9:48 am
Forum: CHAT FORUM
Topic: A interview with exxos 2016
Replies: 8
Views: 112

Re: A interview with exxos 2016

Yeah I think it was volume 2, girlfriend has a copy somewhere :lol: Never paid me my royalties I think I should have got :lol: :lol: :lol: There's also another tape involving a BX :lol: Now I wanna see that! :lol: The Exxos on TV was on YouTube I think, I saw it before somehow, it was to do with th...
by exxos
Thu Feb 07, 2019 9:45 am
Forum: CHAT FORUM
Topic: A interview with exxos 2016
Replies: 8
Views: 112

Re: A interview with exxos 2016

Icky wrote:
Thu Feb 07, 2019 7:30 am
You both should do another interview in July this year as a three years on version. :)
Yeah, I'm all for talking about my favorite subject, "me" :lol:
by exxos
Wed Feb 06, 2019 11:08 pm
Forum: CHAT FORUM
Topic: A interview with exxos 2016
Replies: 8
Views: 112

Re: A interview with exxos 2016

DrF wrote:
Wed Feb 06, 2019 10:36 pm
His actually quite famous been on the television and all sorts :lol:
Yeah, I get around a bit for a old guy :P
DrF wrote:
Wed Feb 06, 2019 10:36 pm
I too have been on TV but no one cares about Police, Camara, Action VHS tapes :lol:
Really ?? :lol:
by exxos
Wed Feb 06, 2019 10:09 pm
Forum: HARDWARE ISSUES
Topic: STe booster v 1.5 36Mhz
Replies: 61
Views: 832

Re: STe booster v 1.5 36Mhz

You could also try 2.2K pull ups on DTACK, AS, BG,BGACK.... But thats really scraping the ideas box there. I don't get why the DMA resistors did not solve the issue... issue like this are normally bus issues with noise and the DMA databus is the most unstable one causing a lot of issues. It really d...
by exxos
Wed Feb 06, 2019 9:34 pm
Forum: CHAT FORUM
Topic: A interview with exxos 2016
Replies: 8
Views: 112

Re: A interview with exxos 2016

AtariCrypt wrote:
Wed Feb 06, 2019 8:24 pm
Big head :ugeek:
Free advert for your site ;)
by exxos
Wed Feb 06, 2019 7:35 pm
Forum: HARDWARE ISSUES
Topic: STe booster v 1.5 36Mhz
Replies: 61
Views: 832

Re: STe booster v 1.5 36Mhz

You can try, but i that was issues with gigafile so its unlikely to help. Swapping the 1772 or DMA chip from another machine may help. But seems you have some odd fault I not seen before..