Re: PAL on CDU-700 / 710 Unibus disk controllers

2016-04-27 Thread Glen Slick
On Wed, Apr 27, 2016 at 2:29 PM, Ian Finder wrote: > It's the useless tape controller chip variant, but still worth dumping for > reference? > I wouldn't say a SCSI tape controller is useless, always fun for installing software from tape just for the heck of it. But that's

Re: PAL on CDU-700 / 710 Unibus disk controllers

2016-04-27 Thread Glen Slick
On Apr 27, 2016 10:19 AM, "Ian Finder" wrote: > > It is most certainly PLS > Interesting. Then we should definitely try reading it and if we can we should be able to turn the fuse map back into the logic equations. A PLS173 is a fairly straightforward device.

Re: PAL on CDU-700 / 710 Unibus disk controllers

2016-04-27 Thread Ian Finder
It is most certainly PLS On Tue, Apr 26, 2016 at 6:00 PM, Glen Slick wrote: > On Tue, Apr 26, 2016 at 3:04 PM, Ian Finder wrote: > > The spec sheet from the PAL mfg. (signetics PLS173) seems to indicate > > security fuses aren't an option on the

Re: PAL on CDU-700 / 710 Unibus disk controllers

2016-04-26 Thread Glen Slick
On Tue, Apr 26, 2016 at 3:04 PM, Ian Finder wrote: > The spec sheet from the PAL mfg. (signetics PLS173) seems to indicate > security fuses aren't an option on the model on my board. I have not > actually tried yet. > A PLS173 does not have a security fuse. A PLUS173 does

Re: PAL on CDU-700 / 710 Unibus disk controllers

2016-04-26 Thread Mike Ross
I'm on holiday with my kids just - ping me next week when I'm home! On Apr 27, 2016 9:59 AM, "Ian Finder" wrote: > Hey Mike, > > The docs claim the 700 / 710 TM use PAL P70013A at U102, and the 720 > TM uses PAL P720008A at U102, but I don't think it'd catch anything on

Re: PAL on CDU-700 / 710 Unibus disk controllers

2016-04-26 Thread Glen Slick
On Apr 26, 2016 3:04 PM, "Ian Finder" wrote: > > The spec sheet from the PAL mfg. (signetics PLS173) seems to indicate > security fuses aren't an option on the model on my board. I have not > actually tried yet. > Regardless of what the spec sheet does or does not

Re: PAL on CDU-700 / 710 Unibus disk controllers

2016-04-26 Thread Ian Finder
The spec sheet from the PAL mfg. (signetics PLS173) seems to indicate security fuses aren't an option on the model on my board. I have not actually tried yet. Failing that, if I can find one locally, there are only 12 bits of combinatorial inputs. I could easily whip up a little Arduino project

Re: PAL on CDU-700 / 710 Unibus disk controllers

2016-04-26 Thread Glen Slick
On Apr 26, 2016 2:35 PM, "Ian Finder" wrote: > > Does anyone out there have one of these controllers? > > There is an unprotected PAL- the address decoder- and I really need a dump of it. Many programmers, particularly the BP technologies ones, can read it Curious how you

Re: PAL on CDU-700 / 710 Unibus disk controllers

2016-04-26 Thread Mike Ross
Is a 720TM any use? I just acquired one... And a BP-1200.… Mike On Apr 27, 2016 9:35 AM, "Ian Finder" wrote: > Does anyone out there have one of these controllers? > > There is an unprotected PAL- the address decoder- and I really need a dump > of it. Many programmers,

PAL on CDU-700 / 710 Unibus disk controllers

2016-04-26 Thread Ian Finder
Does anyone out there have one of these controllers? There is an unprotected PAL- the address decoder- and I really need a dump of it. Many programmers, particularly the BP technologies ones, can read it