PDP8 / ETOS
bfranchuk at jetnet.ab.ca
Mon Oct 19 12:10:34 CDT 2015
On 10/19/2015 8:56 AM, Rick Murphy wrote:
> On Mon, 19 Oct 2015, Johnny Billquist wrote:
>> Unless I remember wrong, the space for device drivers is already
>> reserved in FRTS...?
> Yes. For normal device assignment, you use the command decoder to assign
> unit numbers to files, which loads the handlers for same.
> Adventure uses the USR routines written by Robert Phelps, which allows
> it to dynamically load a driver into memory and open a file at run time.
> Space for those handlers is allocated just above the FRTS allocation.
Since the original email was running simh, does not the emulator have
the hardware floating point as a option, so you can free up a bit more
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