[HECnet] Task Buillder question

Paul Koning paulkoning at comcast.net
Mon Apr 12 13:15:31 PDT 2021



> On Apr 12, 2021, at 4:09 PM, Johnny Billquist <bqt at softjar.se> wrote:
> 
> Right.
> When someone talks about the paper tape system, and absolute loader format, it is without any operating system underneath. It's just bare metal. And the absolute loader is just a simple format that can be read by a small program that you have in memory. It's only purpose is to read in a paper tape with the binary on it, and start that.
> 
> So there are no system dependecies, there are no addressing issues. It's just actual bytes that will be written to specific addresses in memory, and then a jump to an address, and off it goes.
> 
>  Johnny

BTW, SimH can load abs loader format files directly (with the "load" command).  So you don't even need to feed it the abs loader to execute such programs.

	paul





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