On Sun, May 26, 2024 at 4:26 AM Glen Slick <glen.sl...@gmail.com> wrote: > > On Sun, May 26, 2024, 4:06 AM emanuel stiebler <e...@e-bbes.com> wrote: >> >> On 2024-05-25 13:23, Glen Slick via cctalk wrote: >> > On Sat, May 25, 2024 at 6:27 AM emanuel stiebler via cctalk >> > <cctalk@classiccmp.org> wrote: >> >> >> >> Hi all, >> >> anybody in the US could program some SCM90448 EPROMs for me? >> >> None of my programmers I have here, can do it. >> >> >> >> Some old, trusty DATA I/O ??? >> > >> > What is an SCM90448? Can you find a datasheet for that part? I cannot. >> Motorola EPROM, 8kx8, 24 pin DIL. >> >> Was used a lot on pdp11/23s, and PRO350? >> >> Trying to upgrade some of my 11/23+ boards > > Oh, so a Motorola MCM68764 / MCM68766?
Anyway, if the SCM90448 EPROMs for your M8189 KDF11-B are actually Motorola MC68764 / MC68766 EPROMs, I have BP Microsystems device programmers that can handle those. I have programmed some of those myself for my own M8189 KDF11-B. Are you looking to get set up with the 23-380E4 / 23-381E4 M8189-BG firmware? Those Motorola EPROMs require a Vpp of 25 volts, which is probably why a lot of modem device programmers don't handle them.
