pcjs/devices/pdp11/machine/1170 at f0a05ff401e4e0f055ce3cacd37da41ae8f252d2 - Retro/pcjs

Retro/pcjs

Watch

Repository files (latest commit first)
Filename	Latest commit message	Latest commit date
Jeff Parsons f0a05ff401 For side-by-side machine layouts, use dedicated left and right machine.xml files (my hard-coded solution for now)		2016-12-03 16:49:42 -08:00
..
4mb	Working on v1.30.6 now	2016-12-03 09:04:34 -08:00
array	Added a PDP-11 "server array" test page	2016-10-14 11:06:33 -07:00
monitor	Working on v1.30.6 now	2016-12-03 09:04:34 -08:00
panel	Numerous changes to make paper tape configurations more consistent with disk configurations. This allows all devices to share the machine-wide "autoMount" configuration object, now that the PC11 has a proper device name ("PTR"), making its properties distinguishable from those for RK11 and RL11 drives (eg, "RK0", "RL0", etc). And all the tape/disk components now use "Load" functions to connect a tape or disk to a device ("Attach" is deprecated). And finally, all tape/disk components now support operations to deposit their media directly into memory -- although in this case, the names of the operations are necessarily different: "Read" for tape images, "Boot" for disk images. The difference is partly historical convention but also reflects the fact that a "Boot" operation is more limited: paper tapes were designed to be completely loaded into memory, whereas bootable disks are designed for only the first sector to be loaded and executed. Also, paper tape images are now flagged as non-auto-starting, because they often require some user action (eg, loading another tape, setting some switches, etc), whereas disk boot sectors are flagged as auto-starting (see the fStart parameter of the loadImage() interface in the RAM component).	2016-12-03 14:49:51 -08:00
vt100	For side-by-side machine layouts, use dedicated left and right machine.xml files (my hard-coded solution for now)	2016-12-03 16:49:42 -08:00
README.md	Assorted README updates	2016-12-01 22:23:24 -08:00

README.md

layout	title	permalink
page	PDP-11/70 Machine Configurations	/devices/pdp11/machine/1170/

PDP-11/70 Machine Configurations

PDPjs supports a variety of PDP-11/70 machine configurations, including:

The PDP-11/70 with Front Panel also comes in a Debugger Configuration, which features a section on "Toggle-Ins" for your switch-toggling enjoyment.

Unless otherwise specified, the above configurations include 256Kb of RAM. The PDP-11/70's 22-bit architecture supports a maximum of 3,840Kb of RAM, since the last 256Kb is reserved for UNIBUS devices. The top 8Kb is known as the I/O Page, a region containing hardware registers belonging to the CPU, MMU, and assorted peripherals.