Vinnie's MT-32 ROM Tool
Thank you for coming across my MT-32 ROM tool! VMTRT is a little Powershell script that lets you prepare your MT-32 ROM dumps for use with emulators like MUNT.
For dummies
Note: These instructions were developed through trial & error as a first-timer. They are not definitive but they worked for me with an older-revision unit. I have not tried this with the newer model or any other Roland LA equipment.
(Roland R15449122, R15449123)
I used an XGecu T48 with Xgpro v12.96.
install Xgpro, plug in programmer.
Getting the chips out without damaging the board is a NIGHTMARE. Please do it with extreme caution, a hot iron, and use some Chip Quik alloy or something. I didn't and I wound up needing to install bodge wires. When you put the chips back in, put in sockets.
Go to "Select IC(s)", search 27C256.
Select MICROCHIP -> 27C256 @DIP28.
Go to "Select IC(s)", search 27C040
Select ATMEL-> AT27C040 @DIP32.
Uncheck "Check ID" & "Verify after"
Set VPP voltage to 12.5v (not sure if necessary)
Click the big "READ" button
Should read.
Check CRC/SHA1 hash.
Do for both Control ROMs.
If you're using the script directly, you will need to enter this into PowerShell in order to use it:
Set-ExecutionPolicy Unrestricted -Scope CurrentUser
Run script, select "Combine ROMs"
Select mux0 (Control ROM 0, IC26, R15449122)
Select mux1 (Control ROM 1, IC27, R15449123)
Select desired output file.
Check hash.
Get PS12EXE.
I used the following command for creating the EXE:
ps12exe C:\Path\VMTRT.ps1 -noConsole -resourceParams @{ iconFile = 'C:\Path\VMTRT.ico' }