Looks like it's up to you, Fred: Can you open up the 8300 and tell us exactly how many and what kind of ROMs or EPROMs are in there, i.e. any labels and/or part numbers?
Since at least one is custom firmware it's probably in an EPROM (as opposed to a ROM) and will probably have a standard number like 27C512. >From what I've read it looks like there should be three 28-pin sockets with a >27C512 in two of them and the third one empty or with an Option ROM in it. Let me know what you find. m ----- Original Message ----- From: "Fred Whitaker" <[email protected]> To: "Model 100 Discussion" <[email protected]> Sent: Sunday, February 12, 2017 3:32 PM Subject: Re: [M100] Parts for an NEC PC-8300 > Mike > > I don't have an image. I don't know if the ROM you are referring to will > do the job. The 8300 ROM is bigger than the 8201, but I believe it uses > the same chip as the 8201. > > I was under the impression that someone had uploaded a copy of the 8300 > ROM contents, but I don't remember where or when. > > I could send you one of my ROMs, from another machine, but I don't know > if that would help. > > Fred Whitaker > > On 2/11/2017 7:48 PM, Mike Stein wrote: >> Hi Frederick, >> >> If you can send me or point me to an image of that ROM I can probably burn >> an EPROM for you, assuming it's a JEDEC-standard 27xxx type. >> >> m >> >> ----- Original Message ----- >> From: "Frederick Whitaker" <[email protected]> >> To: "Model 100 Discussion" <[email protected]> >> Sent: Saturday, February 11, 2017 6:27 PM >> Subject: [M100] Parts for an NEC PC-8300 >> >> >>> I am interested in a replacement keyboard for my NEC PC-8300. I also >>> need a new Main ROM, When I received this machine it had a specialized >>> ROM in it. It will not boot. >>> >>> If I had those two items I could use this machine. I have asked in the >>> past if anyone could make a main ROM for this machine but never received >>> an answer. >>> >>> Fred Whitaker >
