Re: Logic Analyzer software for the HP-IB/RS-232 bus pre-processor HP 10342B

Oh I know that. At work we have several different types. USBee, Total Phase, etc. They all seem to have various flaws, the most common of which is lack of ground isolation in USB based models. Just seems like a curious omission from their repertoire of post analyzers. Marc On Fri, Jun 1, 2018

Re: Modifying microcode

> It was my understanding from using the 730 that there was limited > (really limited) microcode > enough to load the WCS as the tu58 was a serial device (standard tu58) > and the 730 had to > unpack and stuff the WCS. You need little to do that but far from even > PDP11 instruction set. > The

Re: Modifying microcode

On 06/02/2018 02:45 PM, Warner Losh via cctalk wrote: On Sat, Jun 2, 2018 at 12:43 PM, Tony Duell via cctalk < cctalk@classiccmp.org> wrote: On Sat, Jun 2, 2018 at 7:37 PM, Alan Frisbie wrote: Tony Duell

Re: Modifying microcode

On Sat, Jun 2, 2018 at 7:45 PM, Warner Losh wrote: > Given the vagaries of tape, I'm surprised nobody has made a simple TU58 > emulator that can feed the proper microcode bits to the 11/730... > > Then again, maybe there's no market for that. Oh, I think there are. I belive you can use

Re: Modifying microcode

On Sat, Jun 2, 2018 at 12:43 PM, Tony Duell via cctalk < cctalk@classiccmp.org> wrote: > On Sat, Jun 2, 2018 at 7:37 PM, Alan Frisbie > wrote: > > Tony Duell wrote: > > > >> > until the 8085 CFE loaded the microcode. > >> > >> Loaded from a TU58 cartridge, which is the main reason my 11/730 is

Re: Modifying microcode

On 06/02/2018 02:37 PM, Alan Frisbie via cctalk wrote: > Tony Duell wrote: > > > > until the 8085 CFE loaded the microcode. > > > > Loaded from a TU58 cartridge, which is the main reason my 11/730 is not > > running at the moment. The hardware is fine, I've rebuilt the drive > rollers, > > but

Re: Modifying microcode

On Sat, Jun 2, 2018 at 7:37 PM, Alan Frisbie wrote: > Tony Duell wrote: > >> > until the 8085 CFE loaded the microcode. >> >> Loaded from a TU58 cartridge, which is the main reason my 11/730 is not >> running at the moment. The hardware is fine, I've rebuilt the drive >> rollers, >> but as yet

Re: Modifying microcode

Tony Duell wrote: > > until the 8085 CFE loaded the microcode. > > Loaded from a TU58 cartridge, which is the main reason my 11/730 is not > running at the moment. The hardware is fine, I've rebuilt the drive rollers, > but as yet don't have a readable tape (not even blank, to write the >

Whence 556?

List: This is one that's bothered me for most of my adult life. As you may or may not know, there were three industry standard densities for 7 track 1/2" tape: 200, 556 and finally 800 cpi/bpi. So 200 and 800 are nice decimal multiples of 10. But 556 doesn't fit that pattern--it's not a

M68020-PGA to M68EC020-PGA

hi I am playing with an old Motorola board and I have a problem As you well know, the 68020 is a 32-bit microprocessor from Motorola, released in 1984. Motorola also manufactured MC68EC020 - embedded version of the MC68020 CPU, housed in different packages than the Motorola 68020 microprocessor,

Re: Modifying microcode

On Fri, Jun 1, 2018 at 6:08 PM, Robert Armstrong via cctalk wrote: >>Eric Smith wrote: > >>The control stores of the 11/785, 8600, and 8650 were entirely WCS. >> >>All other VAXen had (relatively) large ROM control store and tiny WCS or >>patch store. > > You forgot the 11/730 and 725. The

Re: Fairchild 9440/445 MicroFlame?

BOB  OK  REFOUND  AND  SET  YOU THE PRODUCT ANNOUNCE...  WEIRD  JUST HAPPENED  TO RUN ACROSS A  FEW  DAYS  AGO   ED#  WWW.SMECC.ORG       In a message dated 6/2/2018 12:21:26 AM US Mountain Standard Time, cctalk@classiccmp.org writes:   Bob, I checked my books, and don't have any of the

Re: Fairchild 9440/445 MicroFlame?

sent  a  mag.  product announcement  over to hare  computer the other  day check  with him   for that.     In a message dated 6/2/2018 12:21:19 AM US Mountain Standard Time, cctalk@classiccmp.org writes:   I'm looking for manual scans, software, really any documentation of any kind for the

Fairchild 9440/445 MicroFlame?

I'm looking for manual scans, software, really any documentation of any kind for the Fairchild F9440 or 9445 (aka the MicroFlame) microprocessors. Yes, bitsavers and a few other places have datasheets for the chips, but that's really about all the documentation I've found. And yes, I know that

RE: Modifying microcode

>Eric Smith wrote: >The control stores of the 11/785, 8600, and 8650 were entirely WCS. > >All other VAXen had (relatively) large ROM control store and tiny WCS or >patch store. You forgot the 11/730 and 725. The KA730 used 2901 bit slicers and the control store was entirely in RAM. After

Re: Fairchild 9440/445 MicroFlame?

Bob, I checked my books, and don't have any of the Fairchild stuff left, passed em on a couple of years ago. Online, I think I hit the same ones you are talking about but including links just in case. I assume you have looked at the 1983 manual, pages 6-51 on with the notional system design and