Warren Toomey
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c84b2dffdd
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I've changed the assembler so that it groks the <ab> string literal
syntax. I think it's OK, but it probably needs more testing.
write_test.s was changed to exercise the string parsing.
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2016-02-26 07:35:36 +10:00 |
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Warren Toomey
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018af6f43e
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Ken Thompson sent e-mail in to explain that there can be labels mid-line, such as
sys write; 1:0; 4
so I modified the assembler logic to support this, and added some code to write_test.s
to verify that it works.
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2016-02-26 06:52:43 +10:00 |
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Warren Toomey
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f9b8c8eeb2
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Changed as7 to allow sys open statements, rewrite write_test.s to
use this syntax, and fixed up a bug in sys_open in a7out.
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2016-02-26 06:19:27 +10:00 |
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Warren Toomey
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ed46793781
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Added cat.s.
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2016-02-26 06:01:47 +10:00 |
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Warren Toomey
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4b9f851a84
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Explain how to assemble and run the program.
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2016-02-25 18:50:00 +10:00 |
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Warren Toomey
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45fb97e051
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An assembly program to test the a7out user-mode simulator.
Expext its contents to change often as a7out is written.
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2016-02-25 18:47:17 +10:00 |
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Warren Toomey
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cc678483e1
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I've added read() now, but I haven't tested it fully yet.
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2016-02-25 18:43:44 +10:00 |
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Warren Toomey
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b463500f37
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I've got a few system calls working: open, close, write, exit along with the
instructions dac, lac, iot and hlt. I can print Hello, world\n, yay!
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2016-02-25 18:12:57 +10:00 |
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Warren Toomey
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a6f220b570
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Dennis' paper of course.
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2016-02-25 11:19:35 +10:00 |
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Warren Toomey
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f5554d1181
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The beginnings of the user-mode simulator: three instructions so far
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2016-02-25 10:25:43 +10:00 |
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Warren Toomey
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c6a928b8b4
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More notes on the assembly syntax.
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2016-02-25 07:52:26 +10:00 |
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Warren Toomey
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1bce0d48e3
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Rename text file with .txt
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2016-02-25 07:47:50 +10:00 |
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Warren Toomey
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e1fbafafcb
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Caching my Github username
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2016-02-25 07:46:59 +10:00 |
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Warren Toomey
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66d4b90a92
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Document the notes/ dir.
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2016-02-25 07:40:04 +10:00 |
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Warren Toomey
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e3815482a3
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First few pages of the s1 section of the kernel typed in. I've added some cruft
at the bottom so that I can test my assembler. I'll take that out later.
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2016-02-25 07:37:59 +10:00 |
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Warren Toomey
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ba69e4e3e7
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Miscellaneous notes about the assembler format and useful URLs.
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2016-02-25 07:37:15 +10:00 |
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Warren Toomey
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550f6486ee
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Hopefully a more readable layout on the Github web site.
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2016-02-25 07:05:29 +10:00 |
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Warren Toomey
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ecdd711b46
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More details of the layout of the repository.
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2016-02-25 07:03:59 +10:00 |
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Warren Toomey
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6e5986d1c7
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First version of the file to document what scans are done.
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2016-02-25 07:01:20 +10:00 |
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Warren Toomey
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73ea3c665b
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Hand-typed version of the cat source code with my own comments to
explain what it is doing.
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2016-02-25 06:56:04 +10:00 |
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Warren Toomey
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07c95bbe15
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I commented out most of the debug lines, and I now output the octal code
along with the input line that generated it. There is code to use values
of defined constants as well as defined labels.
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2016-02-24 13:25:24 +10:00 |
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Warren Toomey
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f46777b272
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Added code to output the final machine code in octal. Parse
the 'i' argument to instructions that indicate indirect mode.
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2016-02-24 11:15:47 +10:00 |
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Warren Toomey
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d70b4e87cc
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First version of as7, which is definitely incomplete. I now need some
example assembly programs and their machine code octal dumps so that
I can complete as7 and get it working properly.
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2016-02-24 09:16:32 +10:00 |
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Warren Toomey
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9b19ce4af5
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Made it fit into 80 columns
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2016-02-24 09:15:12 +10:00 |
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Warren
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debf1966e8
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Update README.md
Add more description of the project
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2016-02-24 08:54:03 +10:00 |
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Warren
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103048132c
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Initial commit
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2016-02-24 07:56:18 +10:00 |
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