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Overview
| Comment: | Fixed a documentation bug (./configure --lowercase=none is actually =pass) and did a clarity pass on the surrounding text while in there. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
87616c6220cba43841d7f4f683193ce1 |
| User & Date: | tangent 2019-08-08 08:40:02.224 |
Context
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2019-08-09
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| 00:39 | Removed +x bit on files that don't need to be executable check-in: 453bb7afc7 user: tangent tags: trunk | |
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2019-08-08
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| 08:40 | Fixed a documentation bug (./configure --lowercase=none is actually =pass) and did a clarity pass on the surrounding text while in there. check-in: 87616c6220 user: tangent tags: trunk | |
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2019-08-03
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| 23:36 | Small fixes to previous for the non-Pi case. check-in: b40c2f5f83 user: tangent tags: trunk | |
Changes
Changes to README.md.
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right thing." The simulator is configured to send lowercase input to
the PDP-8 software running on it. Where we have the skill, will,
need, and time for it, we have [patched][tty] some of the software
we distribute that otherwise would not do the right thing with
lowercase input to make it do so.
This is *not* the option you want if you are a purist.
* **upper** — This option tells the PDP-8 simulator to turn lowercase
input into upper case. This is the behavior we used for all versions
of the PiDP-8/I software up through v2017.04.04. Essentially, it
tells the software that you want it to behave as through you've got
| > > > > > > > > | > > | | | | < < < < < < < < | 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 |
right thing." The simulator is configured to send lowercase input to
the PDP-8 software running on it. Where we have the skill, will,
need, and time for it, we have [patched][tty] some of the software
we distribute that otherwise would not do the right thing with
lowercase input to make it do so.
This is *not* the option you want if you are a purist.
* **pass** — This passes keyboard input through to the simulator
unchanged, and no patches are applied to the PDP-8 software we
distribute.
This is the option for historical purists. If you run into trouble
getting the software to work as you expect when built in this mode,
try enabling CAPS LOCK.
* **upper** — This option tells the PDP-8 simulator to turn lowercase
input into upper case. This is the behavior we used for all versions
of the PiDP-8/I software up through v2017.04.04. Essentially, it
tells the software that you want it to behave as through you've got
it connected to an uppercase-only terminal like the Teletype Model 33 ASR.
The advantage of this mode is that you will have no problems running
PDP-8 software that does not understand lowercase ASCII text.
The disadvantage is obvious: you won't be able to input lowercase
ASCII text.
The SIMH option we enable in this mode is bidirectional, so that if
you run a program that does emit lowercase ASCII text — such as Rick
Murphy's version of Adventure — it will be uppercased, just like an
ASR-33 would do.
Another trap here is that the C programming language requires
lowercase text, so you will get a warning if you leave the default
option **--enable-os8-cc8** set. Pass **--disable-os8-cc8** when
enabling **upper** mode.
[sa]: http://homepage.cs.uiowa.edu/~jones/pdp8/faqs/#charsets
[tty]: https://tangentsoft.com/pidp8i/wiki?name=OS/8+Console+TTY+Setup
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#### --no-lamp-simulator
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