test-drb July 2021

test-drb@ccmp.vtda.org

98 participants
64 discussions

by bear＠typewritten.org

I was playing with ST Minix (v1.1, based on PC Minix v1.3). I didn?t have any luck with Minix (neither the boot program nor the kernel) detecting the MegaFile (60 or 30, both the same outcome) on the Mega 4. Both MegaFiles worked fine with Minix on the 1040ST. So there must be some difference (timing?) between the ST and Mega. There are some usenet posts speculating on the cause of this, as well as contradictory user reports on whether it is known to work or not. So I?m not sure what to make of this. But Minix is pretty tight in 1 MB RAM, so I would like to understand why it shouldn?t work on the Mega 4. Any Atari ST experts on the list who can shed any light on why this might be the case? ok bear.

3 years, 5 months

First new vax in ...30 years? :-)

by abs＠absd.org

In case anyone was interested in an FPGA VAX implementation http://mail-index.netbsd.org/port-vax/2021/07/03/msg003899.html And/or thoughts on 64bit/FP & multiprocessor enhancements :-p http://mail-index.netbsd.org/port-vax/2021/07/03/msg003903.html David

3 years, 5 months

Free punched card deck machine, suitable to make reader and punch

by carlclaunch51＠gmail.com

I bought this years ago for a planned project to create a card reader and card punch for a mainframe replica, using this machine that was designed to reproduce decks of punched cards. It is very heavy and sturdy. It has two input hoppers and two stackers, one for the source cards and one for the punched copies. The punched head is cooled by ammonia gas, indicating that it was designed to operate at a healthy rate of cards per minute if it needed that kind of cooling. A keypunch, by comparison can punch cards at about 20 cpm with no need for cooling, so I estimate this could run at hundreds of CPM. This is ideal for a hobbyist would would convert it so that it reads cards into some kind of mini, mainframe or other computer device, with the other side able to punch contents from the same computer onto blank cards. This works with the standard IBM '5081' style 80 column punched cards. I am moving in 12 days and would need to send this to the scrap yard if someone isn't interested. I can hold it here until July 12th or 13th latest. You will need to bring help to move it as it weighs a few hundred pounds. Pictures at - https://sfbay.craigslist.org/pen/sys/d/los-altos-free-punched-card-reader-p…

3 years, 5 months

VT340 Emulation

by dj.taylor4＠comcast.net

Does anyone have experience with the Reflection software that will emulate a DEC VT340 color graphics terminal?

3 years, 5 months

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test-drb July 2021