Warren Toomey
02eeb59977
tools/a7out: Added the creat() system call.
2016-03-02 06:14:12 +10:00
Warren Toomey
a2e8a187b2
tools/a7out: I took out the code to pretend to deal with binary files,
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and I did a perltidy to reformat the code.
2016-03-01 18:28:37 +10:00
Warren Toomey
73c066ae9d
I've restructured the opr code and the add code using the SimH logic
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and I fixed up some bugs with the new command interpreter. I'm getting
so close to cat.s working!
2016-03-01 16:55:03 +10:00
Warren Toomey
220f87efed
Rewording of the a7out help text.
2016-02-29 17:10:25 +10:00
Warren Toomey
714de5a7e1
I've added a single-step mode to tools/a7out and rationalised the debug output.
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Some small changes to src/cmd/cat.s and wktcat.s to reflect the correct number
of arguments to open. Typos fixes to src/cmd/cat.s.
2016-02-29 16:47:13 +10:00
Warren Toomey
ed80a93a08
tools/a7out: I added another 7 instructions, but I haven't tested them yet.
2016-02-27 21:55:12 +10:00
Warren Toomey
ea7cd8da28
tools/a7out: Added the jms instruction.
2016-02-27 15:55:40 +10:00
Warren Toomey
ea11773db7
tools/a7out: Add the law instruction and change some numeric literals to
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named constants.
2016-02-27 15:24:01 +10:00
Warren Toomey
fafeae7470
I've rewritten tools/a7out to have the correct PDP-7 Unix command
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line memory storage convention, and I've rewritten tools/wktcat.s
to deal with this. I've imported some code from the real cat.s
and now wktcat.s actually works as per the real cat.s.
2016-02-27 10:49:43 +10:00
Warren Toomey
d2511c36c0
I'm trying to bring my wktcat.s file into line with the real one.
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I've refactored tools/a7out to have a dprintf() function to printf
only on debugging. I still need to rewrite the command-line arg
storage structure.
2016-02-27 08:05:52 +10:00
Warren Toomey
d6d4c9b814
According to cat.s, fd 8 is standard error (not fd2!). I've updated
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the a7out simulator to have STDERR on fd 8.
2016-02-26 22:37:03 +10:00
Warren Toomey
9c8dbdea37
tools/a7out: I refactored the indirect logic, much nicer now.
2016-02-26 21:57:10 +10:00
Warren Toomey
a132327a8b
a7out: I had the spa logic wrong. Now fixed.
2016-02-26 21:45:55 +10:00
Warren Toomey
536de9ea56
I worked out the bug with the command-line arguments, I was overwriting
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017777, oops. I've added more comments to wktcat.s (renamed from
simplecat.s). Now we need to find out how the real PDP-7 Unix
does command line arguments.
2016-02-26 21:26:44 +10:00
Warren Toomey
8f8cc64d10
I've added tad and sza to the a7out simulator, and I also added some
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code to place command-line arguments into the simulated memory. I'm
trying to write my own version of cat so I can compare mine to the
real one. Right now there's a bug when simplecat has two arguments.
Zero and one arguments are OK! Saving so I have a backup before proceeding.
2016-02-26 20:56:31 +10:00
Warren Toomey
b8550475b0
I've got a very simple cat program working, which reads from stdin and
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sends it to stdout.
2016-02-26 18:43:20 +10:00
Warren Toomey
f9b8c8eeb2
Changed as7 to allow sys open statements, rewrite write_test.s to
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use this syntax, and fixed up a bug in sys_open in a7out.
2016-02-26 06:19:27 +10:00
Warren Toomey
cc678483e1
I've added read() now, but I haven't tested it fully yet.
2016-02-25 18:43:44 +10:00
Warren Toomey
b463500f37
I've got a few system calls working: open, close, write, exit along with the
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instructions dac, lac, iot and hlt. I can print Hello, world\n, yay!
2016-02-25 18:12:57 +10:00
Warren Toomey
f5554d1181
The beginnings of the user-mode simulator: three instructions so far
2016-02-25 10:25:43 +10:00
