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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).

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Jeff Parsons 2016-12-03 14:49:51 -08:00 • committed by Jeff Parsons
commit b54253acf9
41 changed files with 383 additions and 211 deletions
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8
apps/pdp11/tapes/README.md
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@ -11,13 +11,13 @@ To load any of the DEC PDP-11 paper tapes listed below, you will need to use a [
with a [PC11 High-Speed Paper Tape Reader/Punch](/devices/pdp11/pc11/), such as this
[PDP-11/20](/devices/pdp11/machine/1120/basic/debugger), and then follow this three-step process:
- Load the [DEC PDP-11 Bootstrap Loader](/apps/pdp11/boot/bootstrap/)
- Attach the [Absolute Loader](absloader/) tape image, and load it with the Bootstrap Loader
- Attach one of the "Absolute Format" tape images below, and load it with the Absolute Loader
- "Read" the [DEC PDP-11 Bootstrap Loader](/apps/pdp11/boot/bootstrap/)
- "Load" the [Absolute Loader](absloader/) tape image, and read it with the Bootstrap Loader
- "Load" one of the "Absolute Format" tape images below, and read it with the Absolute Loader
This mirrors the three-step "real world" process of loading paper tape software. Moreover, any "Absolute
Format" tape (which should include all the tapes listed below) can be loaded directly into RAM using the
machine's "Load" button instead of "Attach". In most cases, that eliminates the first two steps.
machine's "Read" button instead of "Load". In most cases, that eliminates the first two steps.
Paper Tape Diagnostics
----------------------

6
apps/pdp11/tapes/diags/README.md
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@ -12,8 +12,8 @@ website, we have been able to archive the PDP-11 diagnostics shown below. The t
[Default PC11 Configuration](/devices/pdp11/pc11/), so that you can easily load them into any machine with a
[PC11](/modules/pdp11/lib/pc11.js), such as this [PDP-11/20 with Front Panel and Debugger](/devices/pdp11/machine/1120/panel/debugger/).
As noted for other [DEC PDP-11 Tape Images](/apps/pdp11/tapes/), these "Absolute Format" tapes can be loaded directly
into RAM using the machine's "Load" button instead of "Attach", allowing you to bypass the usual three-step process of
As noted for other [DEC PDP-11 Tape Images](/apps/pdp11/tapes/), these "Absolute Format" tapes can be read directly
into RAM using the machine's "Read" button instead of "Load", allowing you to bypass the usual three-step process of
loading the [Bootstrap Loader](/apps/pdp11/boot/bootstrap/) in order to load the [Absolute Loader](/apps/pdp11/tapes/absloader/)
in order to load the desired tape.
@ -255,7 +255,7 @@ From [bitsavers.org](http://bitsavers.trailing-edge.com/bits/DEC/pdp11/papertape
MD-11 11/70 CPU EXERCISER
-------------------------
When started in a [PDP-11/70](/devices/pdp11/machine/1170/panel/debugger/cpuexer/) with no disk drives attached,
When started in a [PDP-11/70](/devices/pdp11/machine/1170/panel/debugger/cpuexer/) with no disk drives installed,
this diagnostic displays the following startup information ("EXERCISOR" is DEC's typo, not mine):
MAINDEC-11-DEQKC-B...PDP 11/70 CPU EXERCISOR