Looking for North star software
allisonportable at gmail.com
Tue Jul 3 08:13:57 CDT 2018
On 07/02/2018 06:27 PM, Fred Cisin via cctech wrote:
> On Mon, 2 Jul 2018, dwight via cctalk wrote:
>> I have a machine that I'm just now bringing up. I have some boot
>> software but it is TSS/A that is the accounting multi-user package.
>> I'd really like the TSS/B floppies instead. I'd settle for images.
> Sounds like fun!
> What model Northstar?
There are three basic systems:
Horizon Single density
Horizon Double density same as single save for newer controller.
Advanatage, not s100!
> Once you get some images, have you worked out a way to get the images
> onto hard-sector disks?
If you can get code into the box NS dos can write disks from memory
images. The based NS* horizon
roms are minimal and only boot a disk. The easy path is if everything
works get a copy of NS* DOS
and boot it. Then IO via serial gets easy.
> AFTER you boot the machine, with some minimal programs, you can
> transfer data into the machine through serial port.
Once NS*Dos or CP/M is there yes. Until then the box is pretty useless.
Plan B is get or make a Eprom board with a monitor utility into the
0000h or FXXXh ram block (max 4K).
Plan B' get a cpu card with rom on it.
NOTE: pins 20 and 70 are grounded so any card that uses those pins will
likely have to be modded.
(those are memory protect and unprotect for that era, IEEE 696
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