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jdreesen
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jdreesen
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February 22nd, 2021,
11:28 PM
jdreesen
replied to a thread
Lisa 2/10 floppy and hard drive replacements?
in
Later Apple (68000+ based machines - Mac, Lisa, etc.)
I can also vouch for the IDEFile. Well executed, I use mine to boot all known ( to me..) OS on my Lisa 2/10 These are Lisa office 3.1, , Lisa...
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23 replies | 279 view(s)
February 21st, 2021,
07:51 AM
jdreesen
replied to a thread
Tek 405x web-browser emulator
in
Other
These are just I/O devices at cartridge address 41 . Equations, from the Diag Pack PAL, are : ; WLED write to status LEDs /WLED = /BSR *...
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264 replies | 31269 view(s)
February 21st, 2021,
03:48 AM
jdreesen
replied to a thread
TransEra 764-RAM Auxiliary Memory for Tektronix 4052/4054 Computers
in
Other
So, while functional, the first version of the PCB had too many issues to leave it at that. So an updated design was made & tested. This time I am...
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20 replies | 1869 view(s)
February 15th, 2021,
10:44 PM
jdreesen
replied to a thread
Digital GiGi VK100 colour graphics terminal
in
DEC
I did use ReGIS on a VT240 terminal back in the day to show projected 3D graphics / diagrams of simulation results. It was a simple protocol, so...
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12 replies | 443 view(s)
February 9th, 2021,
11:26 PM
jdreesen
replied to a thread
Tektronix 4041 computer from the early 1980's - WORKING!!
in
Other
In the US that might be the case. Never seen one on this side of the pond...and after shipping & import duties that US-based device becomes 600...
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32 replies | 4211 view(s)
February 4th, 2021,
03:40 AM
jdreesen
replied to a thread
Kenbak-1 50th Anniversary this year
in
Pre-Altair Microcomputers
It would indeed be easy enough to add some papertape-based input to the Kenbak, your could hang it into the keyboard connection and would not even...
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7 replies | 272 view(s)
January 29th, 2021,
12:14 AM
jdreesen
replied to a thread
Kenbak-1 50th Anniversary this year
in
Pre-Altair Microcomputers
Very well done.... Did you remake the PCB and would you be willing to share the layout files ? Was contemplating a similar setup and this would...
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7 replies | 272 view(s)
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About jdreesen
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About jdreesen
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Switzerland
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Engineer
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