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USIfAC II, technical problems & support [MERGED with Plus-related posts from original thread]

Started by ikonsgr, 17:23, 29 December 20

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unay

Quote from: Mark_wllms on 20:43, 26 April 25
Quote from: unay on 09:01, 12 April 25I Wonder if ıts possible to make a save state on ulifac, like m4 board?

I have done this successfully on the USIFAC II by chaining my Multiface 2 onto the USIFAC and saving snapshots onto the emulated disk.

It works even better if you mount an empty disk and then load the game from a snapshot.
How do you chain both usifac and multiface ii?
Can you share photos?
CPC6128
CPC464
CTM640

Mark_wllms

Quote from: unay on 18:50, 27 April 25
Quote from: Mark_wllms on 20:43, 26 April 25
Quote from: unay on 09:01, 12 April 25I Wonder if ıts possible to make a save state on ulifac, like m4 board?

I have done this successfully on the USIFAC II by chaining my Multiface 2 onto the USIFAC and saving snapshots onto the emulated disk.

It works even better if you mount an empty disk and then load the game from a snapshot.
How do you chain both usifac and multiface ii?
Can you share photos?

Either way works: the MF2 has a through edge connector, to which I attach the U2. I also have my U2 on a through connector, so I can put the MF2 on the back.

Vitop69

Well john.
I'm not done climbing the mountain.
I use 2 old PCs. one with xp professional and the other xp home edition and a CPC6128 with the Ulifac II.

I have a PL2303TA usb to connect the PC to your ulifac II and also an Esp8266-Esp12 module.

When I enable Direct Mode on the CPC (|en or |en2) I can navigate on my HDD (only with speed of 9600bps), I can load small basic programs correctly, but if I launch a game it stops about halfway through the loading screen and I get this error message:
"Access violation at address 00648B20 in module AmstradUtilityII_old.exe. Read of address 00000000".

If I connect with wifi after the command |wf,1 I get the connection to the host, but immediately after I get the following error message:

"Access violation at address 74DC59BC in module RICHIED20.DLL. Read of address 00000061

It happens with both xp windows PCs.

I couldn't get out of it.
can you help me?

Thanks for your patience.


Vitop69

Quote from: ikonsgr on 23:05, 31 May 25@Vitop69  did you use the new windows utility? https://www.dropbox.com/scl/fi/93ta0tbkyhzx89cvenjgm/AmstradUtilityII.exe?rlkey=yi0iq04dz45w98jl71j7bq64d&dl=0

Hi john, thanks for the reply. unfortunately I can't use the new utility because my pc are win32, your application is for win64.
the only way is to use the old utility.😪

ikonsgr

Quote from: Vitop69 on 09:49, 01 June 25Hi john, thanks for the reply. unfortunately I can't use the new utility because my pc are win32, your application is for win64.
the only way is to use the old utility.😪
Both utilities are 32bit, i never used 64bit platform for compile.
 If you still have problems with the new utility, i suggest to try it  on newer windows version (7,8,10). This utility was first developed ~2019-2020, so it was first tested on windows 7 and then on windows 10, and worked ok. I don't recall if i ever tested on windows xp, and to be honest, never thought anyone would try it on ~25years old windows xp  :)

RobertK

Here's another happy ULIfAC user for more than a year now, and here's my report, better late than never.

Initially I couldn't get it to work, the CPC showed some weird behaviour when powering it up. So I asked John for help, and his immediate guess were corroded contacts on the CPC's edge connector. I first didn't believe that, because the contacts looked fine to me - well, sort of, because I didn't really know what they *should* look like...



Cleaning them with a rubber didn't help, so I used fine sandpaper. Here I had cleaned just four of them to show the difference:



And finally, it looked like this:



It still wasn't working, but the CPC's startup behaviour had changed a little, so I knew that I was on the right way.

So I took my multimeter and checked continuity between the ends of each contact. On most contacts, there was an immediate beep, but on some I had to touch the copper a few times to get continuity, so I knew that I had to revisit these. And after that, it was working, and I'm delighted with it!

There is only the small issue that with my particular CPC model I need to press the ULIfAC's reset button every time after powering up (cold-booting) the CPC, but I can live with that. According to John, this is "normal" behaviour for older 464 models from 1984.

vasilisk



ikonsgr

Quote from: RobertK on 10:16, 03 June 25There is only the small issue that with my particular CPC model I need to press the ULIfAC's reset button every time after powering up (cold-booting) the CPC, but I can live with that. According to John, this is "normal" behaviour for older 464 models from 1984.
Just add a pullup resistor network on Amstrad's data bus and most probable this problem will be fixed too. :)

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