Phil Budne
cf164b2746
add comment from v1 as man page
2016-03-07 00:16:53 -05:00
Phil Budne
6fbc8c3a05
ptr: dump memory starting at '..'
2016-03-05 14:32:15 -05:00
Phil Budne
f06f075517
fix subtraction with relative values (relative-relative)=absolute!
2016-03-02 15:40:52 -05:00
Warren Toomey
dc2d2dd63b
Phil's change to as7 to implement RELATIVE flag. He says:
...
seems to assemble cat.s and kernel reasonably...
(famous last words)
I've updated a7out to use the same starting location. It runs cat.s OK.
2016-03-02 20:38:00 +10:00
Warren Toomey
d1a6bf8a39
Hah, I worked out how to bring as7 back. Sorry Phil!
2016-03-02 18:41:39 +10:00
Warren Toomey
9fcffe7e43
Merge remote-tracking branch 'origin/master'
2016-03-02 18:00:56 +10:00
Warren Toomey
bcb2cb0f15
local changes.
2016-03-02 17:59:34 +10:00
Phil Budne
97b11c6e40
start with .=4096. This isn't what as.s does (and will break the kernel)
2016-03-01 20:36:13 -05:00
Phil Budne
1bb80f01ec
add --output, --namelist, rim output format, always set 0200 on ptp/rim output
2016-03-01 19:31:01 -05:00
Phil Budne
ff4d793ca5
another round of (hopeful) improvements
...
add indirect bit to "sys" definition
set initial ".." (output base) to 4096 (not yet honored)
add "ptr" output format (binary in paper tape reader format: 3 frames of 6 bits)
remove IOT instrictions (system source uses sop.s)
always write labels to "n.out"
add debug output
fix multiply defined error handling (process symbolic labels on both passes)
2016-03-01 11:22:53 -05:00
Phil Budne
66909ac6fd
fix bugs noted by warren
2016-03-01 11:22:29 -05:00
Phil Budne
aeceb8614a
move whitespace removal back in word loop
2016-03-01 01:43:24 -05:00
Phil Budne
249ce47e44
OR syllables by default (allows multiple OPR instructions)
2016-02-29 14:24:37 -05:00
Phil Budne
9e148edefc
changes in expression parsing
2016-02-28 16:29:01 -05:00
Phil Budne
815d8bc220
comment out debug prints
2016-02-25 21:03:39 -05:00
Phil Budne
2cca3d4473
finish s1.s; tried to clean up s5-s8; let as7 continue after error
2016-02-25 20:58:17 -05:00
Warren Toomey
c84b2dffdd
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.
2016-02-26 07:35:36 +10:00
Warren Toomey
018af6f43e
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.
2016-02-26 06:52:43 +10:00
Warren Toomey
f9b8c8eeb2
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.
2016-02-26 06:19:27 +10:00
Warren Toomey
07c95bbe15
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.
2016-02-24 13:25:24 +10:00
Warren Toomey
f46777b272
Added code to output the final machine code in octal. Parse
...
the 'i' argument to instructions that indicate indirect mode.
2016-02-24 11:15:47 +10:00
Warren Toomey
d70b4e87cc
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.
2016-02-24 09:16:32 +10:00
