- 22222.jpg (73.55 KiB) Viewed 7037 times
You will not be able to post if you are still using Microsoft email addresses such as Hotmail etc
See here for more information viewtopic.php?f=20&t=7296
See here for more information viewtopic.php?f=20&t=7296
DO NOT USE MOBILE / CGNAT DEVICES WHERE THE IP CHANGES CONSTANTLY!
At this time, it is unfortunately not possible to whitelist users when your IP changes constantly.
You may inadvertently get banned because a previous attack may have used the IP you are now on.
So I suggest people only use fixed IP address devices until I can think of a solution for this problem!
At this time, it is unfortunately not possible to whitelist users when your IP changes constantly.
You may inadvertently get banned because a previous attack may have used the IP you are now on.
So I suggest people only use fixed IP address devices until I can think of a solution for this problem!
Please make sure you are logged in for at least 2 hours
to make sure your IP is added into the firewall whitelist, thanks
to make sure your IP is added into the firewall whitelist, thanks
MMU SMT ADAPTERS - WIP
Re: MMU SMT ADAPTERS - WIP
Could also be a missing RAS/CAS line I guess...
Re: MMU SMT ADAPTERS - WIP
Mad8 is certainly soldered. I'll check the other lines on Saturday Afternoon as Grandparent duties are called for tomorrow night and Saturday morning.
Which schematic did you base it on? I can at least meter/scope it out to the ram chips, glue etc when I plug it back in.
Which schematic did you base it on? I can at least meter/scope it out to the ram chips, glue etc when I plug it back in.
If it ain't broke, test it to Destruction.
Re: MMU SMT ADAPTERS - WIP
SMT MMUPhilC wrote: Thu Mar 28, 2019 9:32 pm Which schematic did you base it on? I can at least meter/scope it out to the ram chips, glue etc when I plug it back in.
https://www.exxosforum.co.uk/forum/viewt ... f=31&t=149
PLCC MMU
http://dev-docs.exxosforum.co.uk/520ST_Schematic.pdf
My schematic..
- mmu.png (298.59 KiB) Viewed 7033 times
Re: MMU SMT ADAPTERS - WIP
I've checked all of the MAD lines and they go where they are supposed to go.
I've also checked your schematic and as expected it goes where it's supposed to go.
I'll pop the SMT MMU back into my Mega but I'm wondering if its a connection problem similar to that on the STE plug in booster and that I need to 3d print a spacer to keep the pins in place when there is no MMU in the socket.
I've also checked your schematic and as expected it goes where it's supposed to go.
I'll pop the SMT MMU back into my Mega but I'm wondering if its a connection problem similar to that on the STE plug in booster and that I need to 3d print a spacer to keep the pins in place when there is no MMU in the socket.
If it ain't broke, test it to Destruction.
Re: MMU SMT ADAPTERS - WIP
Bummer. I guess you could scope out the row of ram resistors and see if any lines are not switching..
I'll have to get some more boards made and try them out.. I lost all the others
I'll have to get some more boards made and try them out.. I lost all the others
Re: MMU SMT ADAPTERS - WIP
Will do, need to fix my patch wire first though.
If it ain't broke, test it to Destruction.
Re: MMU SMT ADAPTERS - WIP
Thats the wire patched to MAD9 for my 4mb but I'm now only showing 2mb with my original MMU. The good news is the SMT MMU is also showing 2MB, so it looks like my socket is broken! Will try cleaning it up and see what happens then with the SMT and normal MMU
If it ain't broke, test it to Destruction.
Re: MMU SMT ADAPTERS - WIP
So, my MMU socket on this Mega is a bit dodgy. I've finally managed to get it running again with the original MMU at 4mb.
Although, in my messing around trying to get the SMT MMU working I've managed to free the magic black smoke from inside it.
I'll locate another SMT MMU this week and will try again. I am reaqsonably confident that this mod works fine but will probably want a spacer / blank put into the MMU socket to stop the socket pins flexing too far to make contact with the header pins.
This does look a great mod installed. The green PCB even matches well .
Although, in my messing around trying to get the SMT MMU working I've managed to free the magic black smoke from inside it.
I'll locate another SMT MMU this week and will try again. I am reaqsonably confident that this mod works fine but will probably want a spacer / blank put into the MMU socket to stop the socket pins flexing too far to make contact with the header pins.
This does look a great mod installed. The green PCB even matches well .
- 20190330_182715.jpg (526.89 KiB) Viewed 7004 times
If it ain't broke, test it to Destruction.
Re: MMU SMT ADAPTERS - WIP
Your released the terrible fire!PhilC wrote: Sat Mar 30, 2019 6:27 pm Although, in my messing around trying to get the SMT MMU working I've managed to free the magic black smoke from inside it.
Re: MMU SMT ADAPTERS - WIP
Lookies what I just found while looking for something else (which I didn't find 
)
)- IMG_3930.JPG (54.42 KiB) Viewed 6988 times