[Simh] Old school programming with wiresnips and a question about debugging standalone assembly

[Clem cole]

The diode board was used for the boot strap before large rims were cheap.  DEC predates Intel (who got its big start with the invention of the EPROM - Only after they micro processor did they get out the memory business which we are only recently re-entering). 

As for single stepping sure. The diode board is just memory. 

Sent from my iPhone

> On Dec 16, 2015, at 6:51 PM, Will Senn <will.senn at gmail.com> wrote:
> 
> All,
> I was watching an old PDP-11 video when, seriously, I came across an explanation of programming that involved wire snips. It was interesting and brought home to me the concept of memory pages and such. I thought I would share the screen shot with y'all. If it doesn't come through imagine a guy with a pair of wire cutters snipping off diodes from a ROM card for a PDP11. Is this really how y'all programmed back in the day :)?
> 
> <fiihgchi.>
> 
> 
> Is it possible to single step through a machine language program (such as the bootstrap loader) that was entered using deposit commands as it loads another program (such as the absolute loader, 
> which this particular diode ROM represents) and similarly step through the absolute loader itself as it loads something like DEC-BASIC from paper tape, and if so, what does that process look like in SimH terms?
> 
> Thanks,
> 
> Will
> <small-pliers.png>
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