I'd love to get a pair of those sockets. I am using an Epson Geneva and want to try out some new cp/m programs on it. I'll make an adapter for my programmer.
Sent from my fancy-schmancy phone. > On Jan 15, 2017, at 7:35 AM, Brian White <[email protected]> wrote: > > I have recieved the Molex sockets. 134 sockets. Anyone wants one, or a few, > just tell me. I'll give most of them away for the cost of mailing. I only > paid $30 for the lot. > > They are useful for 2 things: > > * Programming a 27C256 that's already in a carrier. This is for Model 600. > https://goo.gl/photos/rxtctgxYvvrsjiDR6 > > * Programming a Figtronix 28C256 module. This is for Model 100/102/200, and > requires the complimentary Figtronix "programming adapter". (You install pin > headers on one side of the board, to go into the programmer, and install the > socket on the other side of the board. The board just un-scrambles the pinout > from the module back to a 28C256 pinout.) > https://oshpark.com/shared_projects/LfdyAK6a > https://oshpark.com/shared_projects/4vDl1ecB > https://goo.gl/photos/XSQrBshVY44xbp687 > > You can program the 100/102/200 module other ways. If you happen to have > either a dip28 or a soic28 test clip, and 28 jumper wires. But it's not as > convenient to set up the wires, and the test clip alone costs $30 or more. > But if you're building the module, then you already have everything to build > the programming adapter even easier. > > One thing, at this moment, the programming adapter design up on oshpark > currently has holes that are too small for the pins on the Molex socket. > Until the design is updated, you can solder a regular dip28 socket to the > board instead of the special Molex socket, and then stick the Molex socket > into the regular socket. > > Another thing: You might not need any special programming adapter or test > clip ultimately. > There is a different option rom module that isn't verified yet, but it uses a > low profile plcc socket instead of a soldered soic. > https://oshpark.com/shared_projects/iY7EaSqU > > If that one works out, then you would only need the regular plcc adapter that > you can get in a kit along with the programmer. To reprogram it, you would > just remove the eprom from the m100 module, so you wouldn't need any special > pin-remapping adapter, and you wouldn't need a Molex socket either. > > That module needs to use a surface mount plcc socket (through-hole sockets > are too tall), so it's impossible to solder with a pencil. > I have assembled a couple of those boards using nothing but flux, solder > paste syringe, and a $22 heat gun off the shelf at a local store: > http://www.microcenter.com/product/391369/Multi-Function_Mini_Heat_Gun_with_2_Speed-Temperature_Settings > http://www.microcenter.com/product/444659/SRA_Low_Temp_Solder_Paste_-_053_oz > http://www.microcenter.com/product/444655/SRA_No-Clean_312_Flux_Pens > Oh and these... > https://www.amazon.com/Reading-Glasses-Lighted-See-Clearly/dp/B007U7IF8K/ > > That heat gun is NOT a really intended for soldering. I just used it to prove > if one could or not. The answer is if you are careful, yes you can. The point > is, you don't HAVE to spend a lot on tools if you don't already have a full > proper soldering station. Good tools are better, but it's not a bar to entry. > > I am still waiting for some plcc 28C256 to come in the mail, so it's not > tested yet. > Even if it checks out electrically, the steps to build are kind of janky. > You have to sand down two sides of the plcc socket to make it fit inside the > Molex socket, and you have to further sand a chamfer on two edges of the plcc > socket so that they don't push on the pins in the Molex socket, which would > push the Molex pins away from making contact with the "castelated" terminals > on the pcb. Plus the hot air soldering is trickier to get right than > soldering the soic chip with a pencil. So I don't know if this is preferable > to the soic chip module or not. > > https://goo.gl/photos/UYJohbg5qxcGu2KB9 > > > --- > > I have also recieved my order of 9 carriers with 27C256 in them too, > http://www.ebay.com/itm/262794713841 > and have taken an original Model 600 MultiPlan rom and copied it to a new > 27C256 and installed it and ran it. It worked!. > > So, if we can ever find the basic rom, or any other rom, there is no problem > copying it and writing it to a new eprom. > > I went ahead and dumped the other 4 system roms too. They are all the same > HN613256P chip, and all socketed, so it's nothing to read them, edit them, > and write the hacked copy to a new 27C256. Don't even need the special Molex > carrier for those. (not that I'd have a clue where to begin picking them > apart to actually hack them. > > https://drive.google.com/drive/folders/0Bys6eLbSbYyhSFhFZ29TSEZkTUk > > --- > > PHEW! > > -- > bkw > > >> On Tue, Jan 10, 2017 at 8:24 PM, John R. Hogerhuis <[email protected]> wrote: >> Well if you end up being able to program them with Model 600 BASIC I'd be >> interested in getting 2 since I have two Model 600's. >> >> -- John. >
