Mattis Lind

Software developer by profession but hardware tinkerer since child hood. Likes vintage computers and ancient technology.

[Mattis Lind @MattisLind]

@lhf55472946 I know that Usagi Electric (David Lovett) is also working on FPS stuff. Maybe you should reach out to him? https://t.co/8V1BOH5RaF

[Mattis Lind @MattisLind]

@systems_glitch Here is my stash of P3101. Had to use a few to repair a PDP-11/05 CPU so I used up some. Never really understood Intel date codes though. On the backside it says 7939 and 7909. So quite late.

[Mattis Lind @MattisLind]

@saburwulf Actually I think what you hear is the power supplies whining a bit differently depending on how the memory is accessed. Not core itself. At least this is how my 11/05 behaves. The PSU design vary the frequency a bit depending on load and are switching at a quite low frequency.

[Mattis Lind @MattisLind]

@johnb85013 @Keyboards_bot The keyboard is from a Norsk Data branded Tandberg terminal. Likely a TDV 2215. https://t.co/fm7PgwXX7f

[Mattis Lind @MattisLind]

@MrGoodBits You can have BASIC on this thing as well. Pretty cumbersome to input programs though. Need a TMS2716 and a 2732.

[Mattis Lind @MattisLind]

@Pixelfox @larsbrinkhoff Definetely Sam Harbison. The cat was named Schopehauer. I did a print on my Diablo HyType II. https://t.co/v4J8AEhTNQ

[Mattis Lind @MattisLind]

@PeterOnion I see a Calcomp 565. Nice! It is a pity it is so hard to find the correct paper for it. My 565 (IBM 1627) connected to a PDP-11/05.

[Mattis Lind @MattisLind]

@w1ngselec I still have a 12 slot 8/a and some 10 slot chassis. Reasonable weight. The big BA8-C should have been mounted on slides IMO. I wonder what they thought when they designed it.

[Mattis Lind @MattisLind]

Just got this vintage 1975 pdp-8/a running. New PSUs to make it more ”portable” (and able to support all sorts of core memories). Will become my test bed for all sorts of Omnibus boards.

[Mattis Lind @MattisLind]

@applemuzeumpl Interesting! How did the Lisa communicate with the Apollo? Apollo had token ring as the standard network. Were there Appletalk for Apollo?

[Mattis Lind @MattisLind]

@applemuzeumpl Just curious: Why is there a Apollo DN300 on display? Was Apollos used for CAD at Apple?

[Mattis Lind @MattisLind]

@CommodoreLad @Crashedfiesta Yes. That would be the first thing to check for. It looks like they are yellow in this one. I see several round and yellow tantalum capacitors in the picture.

[Mattis Lind @MattisLind]

@AlbertoTenrio Hello Alberto! I have put all I have on github: https://t.co/aO4i3NcJwH I made this more than 5 years ago so I perhaps have forgotten things. I made two Arduino-sketches which control the printer. I know I had to do add som pull-down resistors. Hope it works!

[Mattis Lind @MattisLind]

@jeriellsworth I have a few extra bare PCBs. Could send you one if you want.

[Mattis Lind @MattisLind]

@jeriellsworth You already hav Sys V on it. But if you want more RAM and perhaps the software engineering ROM and BASIC you could build my memory add-on project: https://t.co/a2uzb4fBIl

[Mattis Lind @MattisLind]

@jeriellsworth @DrDnar Curious: Did I get you right that you had a black column line and you fixed a bad solder joint to fix it? Mine has a black horisontal line and I haven’t tried yet but perhaps I should just dig in and try to reflow som solder joints. BTW. It is an EL display, not plasma.

[Mattis Lind @MattisLind]

@StellaFreyju @0xDEADBEEFCAFE @RetroCGA @RetroNora7734 Udo has made an excellent site on the ns32k. He even made a FPGA variant of the ns32k which performs very well. https://t.co/xW3k2pUGSn

[Mattis Lind @MattisLind]

@ThePiloseOne Here are a couple of disk images that I dumped years ago. One of them is for the 2114. Maybe you have seen them already? https://t.co/Hd4Iks5iZj