Data General Nova object formats

[Mark J. Blair]

> On Jun 12, 2016, at 20:19, Toby Thain <toby at telegraphics.com.au> wrote:
> 
> It's pretty easy to hack up a tool to do that much, I think. There is an RB parsing utility in the source code.

I've modified that RB parser to output AB, for inputs that do not require any relocation. Testing was very minimal... I managed to use Program Load to bootstrap the little test program I shared yesterday in my 6045 drive thread after assembling it with Toby's dga, then converting it to a self-loading, self-executing image with the modified parser. I simply set the switches to 000010 (the TTI channel), hit PROGRAM LOAD, then sent the image with a terminal emulator. After the image transferred, the drive clunked as it did a full-stroke seek. I then halted the program and used the console to verify that the program got loaded as intended.

Now, I can use this to write additional test programs to debug my disk drive! For example, I'll probably write one that polls the DONE flag after a seek to see if the I/O status flags are working despite status register reads returning zero.

It's early work, and likely to be buggy, but here's my fork:

https://github.com/NF6X/dpa


-- 
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/