[cctalk] Re: Help? Programming SCM90448 EPROMs
On 5/28/2024 9:01 AM, emanuel stiebler wrote: On 2024-05-28 08:46, Bill Gunshannon via cctalk wrote: I would love to have copies of the image HEX files so I could get some of mine running again. What do you have, an 11/23+ or BDV? I have both available. But mostly I would like to find images for my 11/23+ and 11/73 boards as I am finding a lot of faded EPROMs when I dig thru stuff. Problem with things sitting idle for so many years, bill
[cctalk] Re: Help? Programming SCM90448 EPROMs
On 2024-05-28 08:46, Bill Gunshannon via cctalk wrote: I would love to have copies of the image HEX files so I could get some of mine running again. What do you have, an 11/23+ or BDV?
[cctalk] Re: Help? Programming SCM90448 EPROMs
I got my images here: http://oldpc.su/articles/dec_roms/ On Tue, May 28, 2024 at 5:47 AM Bill Gunshannon via cctalk < cctalk@classiccmp.org> wrote: > > > On 5/27/2024 5:47 AM, emanuel stiebler via cctalk wrote: > > On 2024-05-26 12:30, Glen Slick via cctalk wrote: > >> On Sun, May 26, 2024 at 4:26 AM Glen Slick > wrote: > > > >> Anyway, if the SCM90448 EPROMs for your M8189 KDF11-B are actually > >> Motorola MC68764 / MC68766 EPROMs, > > > > I have one board with MCM68766 and two boards with SCM90448 > > > >> I have BP Microsystems device > >> programmers that can handle those. I have programmed some of those > >> myself for my own M8189 KDF11-B. > > > > Excellent! > > > >> Are you looking to get set up with > >> the 23-380E4 / 23-381E4 M8189-BG firmware? > > > > Yup! Actually hoping for: > > MicroPDP-11/23 ROM v1.1 (23-453E4 and 23-454E4 > > > >> Those Motorola EPROMs require a Vpp of 25 volts, which is probably why > >> a lot of modem device programmers don't handle them. > > OK! > > I would love to have copies of the image HEX files so I could get > some of mine running again. > > bill >
[cctalk] Re: Help? Programming SCM90448 EPROMs
On 5/27/2024 5:47 AM, emanuel stiebler via cctalk wrote: On 2024-05-26 12:30, Glen Slick via cctalk wrote: On Sun, May 26, 2024 at 4:26 AM Glen Slick wrote: Anyway, if the SCM90448 EPROMs for your M8189 KDF11-B are actually Motorola MC68764 / MC68766 EPROMs, I have one board with MCM68766 and two boards with SCM90448 I have BP Microsystems device programmers that can handle those. I have programmed some of those myself for my own M8189 KDF11-B. Excellent! Are you looking to get set up with the 23-380E4 / 23-381E4 M8189-BG firmware? Yup! Actually hoping for: MicroPDP-11/23 ROM v1.1 (23-453E4 and 23-454E4 Those Motorola EPROMs require a Vpp of 25 volts, which is probably why a lot of modem device programmers don't handle them. OK! I would love to have copies of the image HEX files so I could get some of mine running again. bill
[cctalk] Re: Help? Programming SCM90448 EPROMs
Thanks for the info! Missed that the several times I looked at that. On Mon, May 27, 2024 at 4:51 PM Glen Slick wrote: > > On Mon, May 27, 2024, 12:56 PM Mike Stein via cctalk > wrote: >> >> >> (BTW, what's the >> difference between the 68764 and the 68766?) > > > From what I can tell from a quick look at the datasheets, on the 68764 the /E > pin is both a low power mode pin and an output enable pin, while on the 68766 > the /G pin in just an output enable pin. > > So there might be less average power consumed when using the 68764, but the > 68766 data output valid from /G might be quicker than the 68764 data output > valid from /E if the address lines are stable earlier than /E or /G are > asserted. >
[cctalk] Re: Help? Programming SCM90448 EPROMs
On Mon, May 27, 2024, 12:56 PM Mike Stein via cctalk wrote: > > (BTW, what's the > difference between the 68764 and the 68766?) > From what I can tell from a quick look at the datasheets, on the 68764 the /E pin is both a low power mode pin and an output enable pin, while on the 68766 the /G pin in just an output enable pin. So there might be less average power consumed when using the 68764, but the 68766 data output valid from /G might be quicker than the 68764 data output valid from /E if the address lines are stable earlier than /E or /G are asserted.
[cctalk] Re: Help? Programming SCM90448 EPROMs
There's also the unusual, little known but readily available and
programmable TMS2564 (Vpp also 25V, alas); it (sort of) stayed with
the original ROM/EPROM pinouts when everyone else switched to the
JEDEC standard as more pins became needed.
It's a 28 pin 8K x 8 EPROM, but the upper 24 pins are pin-compatible
with the MCM68764/6 and many 24 pin 8K x 8 ROMS (BTW, what's the
difference between the 68764 and the 68766?)
Of course you need the room for the extra 4 pins hanging off the end
and a jumper to the extra chip selects, but it's definitely an option,
especially as the Moto parts are getting scarce. I believe there's
also a Hitachi (?) version equivalent to the 6876x but I can't find
the number at the moment; probably even more obscure...
m
On Mon, May 27, 2024 at 11:35 AM jos via cctalk wrote:
>
>
>
> Gents, please be aware of the WSI 57C49 Eprom, 8Kx8 in a 24 pin DIP
> It can go low as 25nS access time.
>
> Note that addresslines A10,A11 and A12 are swapped, so the contents needs to
> be moved accordingly.
> I used the C program below to create replacements for some Tektronix 4052 ROMS
>
>
> Jos
>
>
>
>
>
> #include
> #include
>
> /*
> * radapt
> *
> * quick hack to transpose rom inages from mk36000 to wsi57c49
> * These are pincombatible except for A10, A11 and A12
> *
> */
>
> #defineK8 8192
> #defineK1 1024
>
> unsigned char in[K8], out[K8];
>
> void move(int a, int b)
> { int i;
> printf("%d %d\n",a,b);
> for (i=0;i out[b*K1+i]=in[a*K1+i];
>
> }
>
>
> int main(int argc,char *argv[])
> {
>int i=0;
>
>int c;
>FILE *fptr;
>
>
>
>fptr=fopen(argv[1],"rb");
> { if (!fptr)
> printf("Unable to open file %s\n",argv[1]);
>else
>{ while( (c=fgetc(fptr)) !=EOF )
>{ in[i]=c; i++;}
> fclose(fptr);
> if (i!=K8)
> { printf("incorrect input file size, must be %d, not
> %d\n",K8,i);
> exit(-1); }
> move(0,0);
> move(1,2);
> move(2,4);
> move(3,6);
> move(4,1);
> move(5,3);
> move(6,5);
> move(7,7);
> fptr=fopen("out.bin","w");
> for (i=0;ifputc(out[i],fptr);
> fclose(fptr);
> printf("Output file out.bin written\nmv out.bin %s\n",argv[1]);
> };
>};
> }
>
>
[cctalk] Re: Help? Programming SCM90448 EPROMs
Gents, please be aware of the WSI 57C49 Eprom, 8Kx8 in a 24 pin DIP
It can go low as 25nS access time.
Note that addresslines A10,A11 and A12 are swapped, so the contents needs to be
moved accordingly.
I used the C program below to create replacements for some Tektronix 4052 ROMS
Jos
#include
#include
/*
* radapt
*
* quick hack to transpose rom inages from mk36000 to wsi57c49
* These are pincombatible except for A10, A11 and A12
*
*/
#define K8 8192
#define K1 1024
unsigned char in[K8], out[K8];
void move(int a, int b)
{ int i;
printf("%d %d\n",a,b);
for (i=0;i
[cctalk] Re: Help? Programming SCM90448 EPROMs
For programming Motorola EPROMs for the KDF-11B I had very good luck building and using this programmer: https://www.mattmillman.com/projects/hveprom-project/an-easy-to-build-programmer-for-2704-2708-mcm68764-mcm68766-eproms/ On Mon, May 27, 2024 at 3:20 AM Glen Slick via cctalk wrote: > On Mon, May 27, 2024, 2:47 AM emanuel stiebler wrote: > > > On 2024-05-26 12:30, Glen Slick via cctalk wrote: > > > On Sun, May 26, 2024 at 4:26 AM Glen Slick > wrote: > > > > > Anyway, if the SCM90448 EPROMs for your M8189 KDF11-B are actually > > > Motorola MC68764 / MC68766 EPROMs, > > > > I have one board with MCM68766 and two boards with SCM90448 > > > > > I have BP Microsystems device > > > programmers that can handle those. I have programmed some of those > > > myself for my own M8189 KDF11-B. > > > > Excellent! > > > > > Are you looking to get set up with > > > the 23-380E4 / 23-381E4 M8189-BG firmware? > > > > Yup! Actually hoping for: > > MicroPDP-11/23 ROM v1.1 (23-453E4 and 23-454E4 > > > > Right, that is the final version as far as I know, and images are available > here: > > > https://web.archive.org/web/20160321035043/http://avitech.com.au/pdp-11-03/bdv11-rom-upgrade.html > > I'll have to check my M8189. I might not have had images for that version > available at the time I upgraded mine. > > I wonder if "SCM90448" is just a customer specific label for a standard > MC68766 part. >
[cctalk] Re: Help? Programming SCM90448 EPROMs
On Mon, May 27, 2024, 2:47 AM emanuel stiebler wrote: > On 2024-05-26 12:30, Glen Slick via cctalk wrote: > > On Sun, May 26, 2024 at 4:26 AM Glen Slick wrote: > > > Anyway, if the SCM90448 EPROMs for your M8189 KDF11-B are actually > > Motorola MC68764 / MC68766 EPROMs, > > I have one board with MCM68766 and two boards with SCM90448 > > > I have BP Microsystems device > > programmers that can handle those. I have programmed some of those > > myself for my own M8189 KDF11-B. > > Excellent! > > > Are you looking to get set up with > > the 23-380E4 / 23-381E4 M8189-BG firmware? > > Yup! Actually hoping for: > MicroPDP-11/23 ROM v1.1 (23-453E4 and 23-454E4 > Right, that is the final version as far as I know, and images are available here: https://web.archive.org/web/20160321035043/http://avitech.com.au/pdp-11-03/bdv11-rom-upgrade.html I'll have to check my M8189. I might not have had images for that version available at the time I upgraded mine. I wonder if "SCM90448" is just a customer specific label for a standard MC68766 part.
[cctalk] Re: Help? Programming SCM90448 EPROMs
On 2024-05-26 12:30, Glen Slick via cctalk wrote: On Sun, May 26, 2024 at 4:26 AM Glen Slick wrote: Anyway, if the SCM90448 EPROMs for your M8189 KDF11-B are actually Motorola MC68764 / MC68766 EPROMs, I have one board with MCM68766 and two boards with SCM90448 I have BP Microsystems device programmers that can handle those. I have programmed some of those myself for my own M8189 KDF11-B. Excellent! Are you looking to get set up with the 23-380E4 / 23-381E4 M8189-BG firmware? Yup! Actually hoping for: MicroPDP-11/23 ROM v1.1 (23-453E4 and 23-454E4 Those Motorola EPROMs require a Vpp of 25 volts, which is probably why a lot of modem device programmers don't handle them. OK!
[cctalk] Re: Help? Programming SCM90448 EPROMs
On Sun, May 26, 2024 at 4:26 AM Glen Slick wrote: > > On Sun, May 26, 2024, 4:06 AM emanuel stiebler 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 >> > 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.
[cctalk] Re: Help? Programming SCM90448 EPROMs
On Sun, May 26, 2024, 4:06 AM emanuel stiebler 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 > > 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? >
[cctalk] Re: Help? Programming SCM90448 EPROMs
On 2024-05-25 13:23, Glen Slick via cctalk wrote: On Sat, May 25, 2024 at 6:27 AM emanuel stiebler via cctalk 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
[cctalk] Re: Help? Programming SCM90448 EPROMs
I have an old Logical Devices Inc, Gangpro 8 with DIP sockets on it. What package is this part? Is it compatible with anything more widely known? On 5/25/2024 12:23 PM, Glen Slick via cctalk wrote: On Sat, May 25, 2024 at 6:27 AM emanuel stiebler via cctalk 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.
[cctalk] Re: Help? Programming SCM90448 EPROMs
On Sat, May 25, 2024 at 6:27 AM emanuel stiebler via cctalk 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.
