Re: VCF/PNW Exhibit & Trip Report - The Old Calculator Museum

2019-03-29 Thread Johnny Eriksson via cctalk
Noel Chiappa wrote: > > It has been in use at STACKEN at least since the beginning of the 80ies > > I was meaning before that; somewhere in Scandanavia, I expect? Eh, not that > important, I guess. >From Finland. Sold used by DEC Sweden to Stacken, for 1 SEK (aound 20 cents at that time).

Re: Microcode, which is a no-go for modern designs

2019-01-06 Thread Johnny Eriksson via cctalk
> Few people (but most are right here) can recite PI to enough digits to > reach the level of inaccuracy. And those who believe that PI is exactly > 22/7 are unaffected by FDIV. (YES, some schools do still teach that!) Why remember the digits, when a small program can provide them? +0un q

Re: Happy Armed Forces Day 2018

2018-05-21 Thread Johnny Eriksson via cctalk
Fred Cisin wrote: > d) The TRULY IMPORTANT issues will never be solved through the use of > armed forces: > big-endian V little-endian > vi v emacs > DEC V IBM > CDC V IBM > TRS80 V Apple > Atari V Commodore > IBM V Apple > Android V IOS > Linux V Windoze V MacOS > number of buttons on a mouse

Re: USB Panda Display for klh10 help

2018-04-22 Thread Johnny Eriksson via cctalk
David Griffith wrote: > I'm looking for someone who knows TOPS10 / TOPS20 well enough to figure > out for me why this test program won't compile. Once that's done, I can > complete the firmware for the USB Panda Display an its support within > klh10. I'll then make more copies of the USB Pan

Re: 8085 Dissasembly?

2018-04-17 Thread Johnny Eriksson via cctalk
Bill Gunshannon wrote: > Many of us think that the advent of the x86 architecture is what led to > masochism. ... or masochism led to the x86 architecture. > bill --Johnny

Re: Speed now & then (Space and time?)

2018-04-13 Thread Johnny Eriksson via cctalk
Ethan Dicks wrote: > There are times when video instruction makes sense - describing, for > example, a chemical reaction that produces major visible change in a > few moments is better to watch than to try to describe. The vast > majority of stuff? Teaching programming? I don't want to watch 2

Re: DL10 documentation

2018-01-09 Thread Johnny Eriksson via cctalk
Lars Brinkhoff wrote: > Hello, > > Richard Cornwell wants to implement DL10 for his KA10/KI10 simulator, > but he doesn't have any documentation for it. Any leads? First question is: since the DL10 is a DMA device for a handful of PDP11s, what is intended at the other (unibus) end of it? I ha

Re: Which Dec Emulation is the MOST useful and Versatile?

2017-10-29 Thread Johnny Eriksson via cctalk
Lars Brinkhoff wrote: > Jon Elson wrote: > > I'm not sure the original DEC PDP-10 (KA-10) used microcode, but the > > KI-10 did. > > As far as I understand, the PDP-6 (type 166), KA10, and KI10 were > hardwired. KL10 and KS10 were microcoded. The Foonly F1 preceeded and > influenced the KL10 de