Greg, You shouldn't have to remove the original system ROM socket in the M100; if you solder the EPROM into the adapter without a socket the adapter should plug right in and clear the keyboard.
If you need to reprogram the EPROM after it's soldered into the adapter then you should be able to make a 'programming' adapter using another of the adapter boards but assembled 'in reverse', to convert the 'module' back to the standard 27C256/512 pinout. As I said, I'd have to go back for the details because AFAIR you have to change/add one or two of the option jumpers and the details of those seem to have been lost. Good idea to test any mods in VT before committing to an EPROM. m ----- Original Message ----- From: "Greg Swallow" <[email protected]> To: <[email protected]> Sent: Tuesday, May 08, 2018 12:36 PM Subject: Re: [M100] M100 with TPDD1 on eBay > > Do a dry fit and check clearance before you solder anything; if you're > thinking of using an IC socket for the EPROM on the adapter you may find that > that makes it just a tiny bit too tall and you actually have to solder the > EPROM directly on to the adapter. > > There is provision for reprogramming the EPROM after it's installed if > necessary but I'd have to go back and look up the details. > > m > > That's what I was figuring too Mike. I know from changing out the Main ROM in > the M102 an IC socket leaves no room. I used two rows of SIP female headers > in the M102 to create a "socket." The M100 does have a bit more room and > maybe, if I remove the original IC socket replacing it with headers I make it > so I can at least remove the board without desoldering should I want to > reprogram or upgrade the EEPROM later. Dry fitting is definitely in the plan. > > God Bless, > > GregS <>< >
