Resurrecting the 32/64MBIT flash project and 8/16 bit addressing.
- Thread starter hatmoose
- Start date
Hello ack and hatmoose.... i'm speaking to you becouse you make this happen 
and i will say thanks for that.
Currently i dont have any mvs game that need to be repaired so i try with a conversion from CHA256 and PROGBK1
First test done as 32Mbit V rom byte mode and its works
i'm using MX29LV320EBTI with cheap TL866 programmer and adapter.
Bad part ? just see how many damn solder you have to do on a single adapter
<- that my face after 4 adapter.
I really don't know how I didn't break everything while soldering and I think I was really lucky because everything worked on the first try
I believe it is practically impossible to use to do a complete conversion which requires 8 adapters for the c roms and 4 for the v roms, unless you order them already made from the factory that prints and assembles.
But the positive part is that we can certainly now fix many interesting titles that required this spare part and this is a great goal to me
At this point i'm a little annoyed by anyone who could use this to make money so guys feel free try to protect this project or leave it free for all, its up to you
Another not very nice part is that we need 5 - 74LVC244 and this significantly increases the price of the adapter.
and i will say thanks for that.Currently i dont have any mvs game that need to be repaired so i try with a conversion from CHA256 and PROGBK1
First test done as 32Mbit V rom byte mode and its works
i'm using MX29LV320EBTI with cheap TL866 programmer and adapter.Bad part ? just see how many damn solder you have to do on a single adapter
<- that my face after 4 adapter.I really don't know how I didn't break everything while soldering and I think I was really lucky because everything worked on the first try
I believe it is practically impossible to use to do a complete conversion which requires 8 adapters for the c roms and 4 for the v roms, unless you order them already made from the factory that prints and assembles.
But the positive part is that we can certainly now fix many interesting titles that required this spare part and this is a great goal to me
At this point i'm a little annoyed by anyone who could use this to make money so guys feel free try to protect this project or leave it free for all, its up to you
Another not very nice part is that we need 5 - 74LVC244 and this significantly increases the price of the adapter.
Attachments
I will do the other test with C-Rom and 64Mbit word.... but this time i order stencil mask tool and 138C° solder past to do a faster solder work.
@ack, do you think i can use HT244 instead of LVS244 ?
@hatmoose, have you received the materials? Have you had the chance to test it too?
After a few hours of playing the audio now crackles in my conversion, it seems that there is one of the lvs244 which as soon as it warms up starts to not work well, I probably exaggerated with the hot air.
But it doesn't matter I'm confident that the project works and my assembly was not exactly perfect.
i take apart to re-read the MX memory to see if they were intact and they are, so it is necessarily one of the 244 cooked by me.
I also ordered the tsop20 adapter to test all 244 and figure out which one broke.
@ack, do you think i can use HT244 instead of LVS244 ?
@hatmoose, have you received the materials? Have you had the chance to test it too?
After a few hours of playing the audio now crackles in my conversion, it seems that there is one of the lvs244 which as soon as it warms up starts to not work well, I probably exaggerated with the hot air.
But it doesn't matter I'm confident that the project works and my assembly was not exactly perfect.
i take apart to re-read the MX memory to see if they were intact and they are, so it is necessarily one of the 244 cooked by me.
I also ordered the tsop20 adapter to test all 244 and figure out which one broke.
I think ideally U3, U4, U5 should be 74LVC244 to get the proper 5V to 3.3V conversion, then U6 and U7 should be 74HCT244 to get 3.3V to 5V. However in order to use those 74HCT244's they need to be powered by 5V and those locations are currently wired to 3.3V. You want me to make a version for the HCT244's?
https://www.mvs-scans.com/misc/toshiba-64mbit-adapter-master-ack2.zip
Just to be clear, they need to be 74HCT244 and not 74HC244
Sorry ack, i mean HT.
https://www.mvs-scans.com/misc/toshiba-64mbit-adapter-master-ack2.zip
Just to be clear, they need to be 74HCT244 and not 74HC244
I get some of this https://it.aliexpress.com/item/1005...t_main.92.dc523696LeJ8nE&gatewayAdapt=glo2ita
They say 74HCT244PW 74 HCT244 HCT244. I hope thats correct
hatmoose
Enlightened
Made some LVC/HCT boards from Acks awesome update.
I had some low-profile SMD TSOP48 test sockets left over from another project so decided to use them here. Attaching these things to the board was actually quite hard. There is very little room for a soldering iron, cant use hot air or reflow - the easy way would be to use a hotplate. Which I do not have.
Unfortunately the assembled part (9.5mm) is slightly too high to fit between the boards (8mm) and have the shell fit together. I think I can shave them down to 8mm by manufacturing thinner PCB's and also by removing the plastic standoffs from the pins.
But for testing this is just fine, with the shell off its possible to wedge the CHAR and PROG into their slots at a slight angle and have them work.
I had some low-profile SMD TSOP48 test sockets left over from another project so decided to use them here. Attaching these things to the board was actually quite hard. There is very little room for a soldering iron, cant use hot air or reflow - the easy way would be to use a hotplate. Which I do not have.
Unfortunately the assembled part (9.5mm) is slightly too high to fit between the boards (8mm) and have the shell fit together. I think I can shave them down to 8mm by manufacturing thinner PCB's and also by removing the plastic standoffs from the pins.
But for testing this is just fine, with the shell off its possible to wedge the CHAR and PROG into their slots at a slight angle and have them work.
hatmoose
Enlightened
I made some very minor changes to Acks design to make it easier to solder those SMD test sockets, basically just adjusting the pad size on the TSOP48 footprint
Hello guys, i finished just now with my second attempt to make 4 working adapter in row with:
-Stencil
-Low temp soldering past
-Iron on 280
-Hot air on 250
-my best friend "flux"
And i confirm that the adapter work flawless on byte mode and MX29LV320EBTI
After 10 adapters done with hand and hor air, now i'm goin fast and its not too difficult the assemble part.
First attempt was a mess for me.
Its a really nice solution for repair game or try crazy conversion.
Next test will be try as c rom.
I would really love to be able to make a copy of Samurai Shodown v perfect on BK1 but we still have the problem of the P1/P2 rom.
-Stencil
-Low temp soldering past
-Iron on 280
-Hot air on 250
-my best friend "flux"
And i confirm that the adapter work flawless on byte mode and MX29LV320EBTI
After 10 adapters done with hand and hor air, now i'm goin fast and its not too difficult the assemble part.
First attempt was a mess for me.
Its a really nice solution for repair game or try crazy conversion.
Next test will be try as c rom.
I would really love to be able to make a copy of Samurai Shodown v perfect on BK1 but we still have the problem of the P1/P2 rom.
Last edited:
Hello Guys,
As i promise here my crazy conversion, all done with converter ack version.
This was the only game I bought converted from Aliepress, it was a conversion of Irritating Maze.. (thanks aliexpress seller for this CHA512 & BK1
)
What game could I try to test everything properly? You guessed it, it's the Garou prototype as the final game has 4x 2Mb P roms.
All work pretty fine, and i'm really happy with that.
It was a lot of fun soldering and making everything work.
As i promise here my crazy conversion, all done with converter ack version.
This was the only game I bought converted from Aliepress, it was a conversion of Irritating Maze.. (thanks aliexpress seller for this CHA512 & BK1
)What game could I try to test everything properly? You guessed it, it's the Garou prototype as the final game has 4x 2Mb P roms.
All work pretty fine, and i'm really happy with that.
It was a lot of fun soldering and making everything work.
Big_P Big_p
Professional
Correct. The flash chip needs to be programmed external from the adapter.
Big_P Big_p
Professional
Do any of the above zip files have a schematic?