12 Commits

Author	SHA1	Message	Date
Warren Toomey	fafeae7470	I've rewritten tools/a7out to have the correct PDP-7 Unix command ... 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. ... 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 ... 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 ... 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 ... 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 ... 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 ... 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 ... 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