On 3/22/2017 10:47 AM, Bill Gunshannon via cctalk wrote:
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From: cctalk [cctalk-boun...@classiccmp.org] on behalf of W2HX via cctalk
[cctalk@classiccmp.org]
Sent: Tuesday, March 21, 2017 11:49 PM
To: General Discussion: On-Topic and Off-Topic Posts (cctalk@classiccmp.org)
Subject: booting os/8
Hi folks,
I have a PDP-8/e that I've been working on. I have completed construction of AK6DN's
RX01/02 emulator. I got to the step tonight where I was trying to boot an OS/8 disk image
and nothing was happening. I realized that I do not have the bootstrap diode board in my
8/e so begin the bootstrap triggered by the "SW" switch.
Does anyone have the program I can toggle in for the bootloader? What I found
is somewhat confusing. Here is a discussion on this topic.
https://groups.google.com/forum/#!searchin/alt.sys.pdp8/RX01$20boot|sort:relevance/alt.sys.pdp8/9-GCoA0PCLA/370T3R-Ru_AJ
It seems one fellow was attempting to edit/improve the bootloader of another
fellow. I was wondering if anyone has distilled this into something simple. At
the moment, I care only about booting from RX01-Disk0.
Any pointers greatly appreciated. Thanks
Eugene W2HX
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Well, I am sure glad someone posted this. I had never heard of the work done
by AK6DN and have considered
looking into such a project in the past.
So, has anyone looked at someting sililar for RL drives?
bill
Look here: http://www.vcfed.org/forum/blog.php?12663-AK6DN for info on my
Arduino based RX02 emulator using a microSD card.
Works on RX11/RXV11/RX8E as RX01, RX211/RXV21/RX28 as RX02. Passes DEC hardware
diagnostics.
Reinhard has done an FPGA based RL01/2 drive emulator, see:
http://www.pdp11gy.com/indexE.html#file:///E:/homepage/indexE.html
Don
aka AK6DN
