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Add a new "Remote Shell" application

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This allows a COS shell to remotely control another shell from a
serial line. It's very crude now, but the plan is to add tools much
like the POSIX tools, but for COS.
This commit is contained in:
Virgil Dupras 2021-01-03 14:01:34 -05:00
parent 0f83451193
commit a0775c5dcf
3 changed files with 35 additions and 0 deletions
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9
blk.fs
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@ -4,6 +4,7 @@ MASTER INDEX
005 Z80 assembler 030 8086 assembler 005 Z80 assembler 030 8086 assembler
050 AVR assembler 70-99 unused 050 AVR assembler 70-99 unused
100 Block editor 120 Visual Editor 100 Block editor 120 Visual Editor
150 Remote Shell
160 AVR SPI programmer 165 Sega ROM signer 160 AVR SPI programmer 165 Sega ROM signer
170-259 unused 260 Cross compilation 170-259 unused 260 Cross compilation
280 Z80 boot code 350 Core words 280 Z80 boot code 350 Core words
@ -873,6 +874,14 @@ CREATE PREVPOS 0 , CREATE PREVBLK 0 , CREATE xoff 0 ,
1 XYMODE C! clrscr 0 ACC ! 0 PREVPOS ! nums bufs contents 1 XYMODE C! clrscr 0 ACC ! 0 PREVPOS ! nums bufs contents
BEGIN xoff? status setpos KEY handle UNTIL BEGIN xoff? status setpos KEY handle UNTIL
0 XYMODE C! 19 aty IN$ ; 0 XYMODE C! 19 aty IN$ ;
( ----- 150 )
( Remote Shell )
0 :* rsh<? 0 :* rsh>
: rsh BEGIN
rsh<? IF
DUP 4 ( EOT ) = IF DROP EXIT THEN EMIT THEN
KEY? IF DUP 0x80 < IF rsh> ELSE DROP EXIT THEN THEN
AGAIN ;
( ----- 160 ) ( ----- 160 )
( AVR Programmer, load range 160-163. doc/avr.txt ) ( AVR Programmer, load range 160-163. doc/avr.txt )
( page size in words, 64 is default on atmega328P ) ( page size in words, 64 is default on atmega328P )

4
doc/intro.txt
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@ -47,8 +47,12 @@ When you're ready to move to real hardware, read hw/intro.txt.
* Dictionary of core Forth words (dict.txt) * Dictionary of core Forth words (dict.txt)
* Editing text (ed.txt) * Editing text (ed.txt)
* Assembling binaries (asm.txt) * Assembling binaries (asm.txt)
* Remote Shell (rsh.txt)
* Programming AVR chips (avr.txt) * Programming AVR chips (avr.txt)
* Bootstrap Collapse OS to a new system (bootstrap.txt) * Bootstrap Collapse OS to a new system (bootstrap.txt)
* Cross-compilation mechanisms (cross.txt) * Cross-compilation mechanisms (cross.txt)
* Protocols (protocol.txt) * Protocols (protocol.txt)
* Grid subsystem (grid.txt)
* Sega Master System ROM signatures (sega.txt)
* Self-hosting notes (selfhost.txt)

22
doc/rsh.txt Normal file
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@ -0,0 +1,22 @@
# Remote Shell
You can control a remote system from Collapse OS using the
Remote Shell application at B150. All you need are words that
follow the EMIT and KEY? signatures. Serial lines drivers
provide those words.
To use the remote shell, first plug your words into RSH aliases:
' FOO> ' rsh> *! ' FOO<? ' rsh<? *!
FOO> being the "EMIT" word and "FOO<?" being the KEY? word.
Then, it's only a matter of running "rsh". This will repeatedly
poll rsh<? and emit whatever is coming from there and at the
same time, poll KEY? and push whatever key you type to rsh>.
You can stop the remote shell by typing any character over 0x7f.
For example, on a TRS-80 4P, the BREAK key yields 0x80 and will
break the loop.
See hw/acia.txt for tips on configuring a serial line.