20 Jun
2005
20 Jun
'05
7:42 a.m.
>>>> "Allison" == Allison
<ajp166 at bellatlantic.net> writes:
Allison> The problem with QBUS PDP-11 IDE is that I've not seen a
Allison> design that has a DMA implementation which make it slow.
Allison> Also drivers for common PDP-11 OSs other than unix are roll
Allison> your own, wich is possible IF you already have a working
Allison> system (with editors and asm).
Or worse... Adding any device driver to RSTS, never mind a disk
driver, requires a full source kit and a bunch of undocumented
procedures. That OS never supported customer-supplied device
drivers.
RT and RSX are certainly more accommodating in that respect.
paul