[cctalk] Re: SCO on Virtualbox

2023-08-07 Thread Robin Downs via cctalk
Hi, I have done this using VirtualBox on Windows... The main issue is that SCO needs to not see 4GB of RAM - use the boot command options to reduce it to only using say 64MB and it will work... Regards, Robin -Original Message- From: KenUnix via cctalk Sent: Thursday, August 3,

[cctalk] CTS-300 / DIBOL for RT-11 V5.x - Any source or downloads please?

2023-03-04 Thread Robin Downs via cctalk
Hi all and thank you for reading I am trying to get my rebuilt PDP-11/23 running and able to compile and run DIBOL code... I have RT11 up and working again, but cannot find a complete set of CTS-300 files, with the DIBOL compiler FYI, I'm in the UK - and help greatly appreciated! Regards, R

[cctalk] Help! Mentec and GRC DEC compatible manuals not in usual places...

2022-11-19 Thread Robin Downs via cctalk
Hi and thanks for reading... I am on the way to getting a small Q-Bus PDP11 up and running (I used to work on and repair then in the 1980s) and have some boards and a chassis now, but I cannot find any documentation for a couple of less common boards I have got - any help would be greatly appre

[cctalk] Re: Inline Serial Device?

2022-11-13 Thread Robin Downs via cctalk
Hi, Actually, I built exactly this many years ago (1990s) to operate a cash draw for dumb terminals on Unix systems, used on counters as point of sale devices... The existing solution used a processor, ram, rom, double sided board etc and was too expensive, so I designed a replacement with a re

[cctalk] Re: 8" disk question!

2022-09-22 Thread Robin Downs via cctalk
Looking at the circuit of the Qume drive, it is certainly not designed to work with disks with both holes, I can only imagine that drives only expected disks to be one or the other when it was designed, but it could easily be modified with a three position On-Off-On switch to disable either inde