47 Commits

Author	SHA1	Message	Date
Lawrence Kesteloot	84d9a7ce82	Add unary minus (negative).	2018-08-05 16:43:50 -07:00
Lawrence Kesteloot	fb323943ce	Add NOT.	2018-08-05 16:27:33 -07:00
Lawrence Kesteloot	007cf3e670	Add AND and OR.	2018-08-05 16:12:58 -07:00
Lawrence Kesteloot	a6ed83d669	Make code even more compact.	2018-08-05 12:06:45 -07:00
Lawrence Kesteloot	f33d9ed8bd	More efficient writing of machine code.	2018-08-05 12:00:59 -07:00
Lawrence Kesteloot	e143757158	Add FOR/NEXT loops.	2018-08-04 23:38:44 -07:00
Lawrence Kesteloot	fb467e5289	Speed up tokenization a bit.	2018-08-04 17:35:55 -07:00
Lawrence Kesteloot	013056e778	Handle forward GOTOs.	2018-08-04 17:32:36 -07:00
Lawrence Kesteloot	23fa9e4e01	Wrap text at screen edge; double input buffer.	2018-08-03 22:39:23 -07:00
Lawrence Kesteloot	ad0f62f972	Add COLOR= and PLOT.	2018-08-03 19:15:18 -07:00
Lawrence Kesteloot	d1b939414c	Add GR and TEXT commands.	2018-08-03 18:57:30 -07:00
Lawrence Kesteloot	d7830c49af	Can handle parentheses in expressions.	2018-08-03 18:38:55 -07:00
Lawrence Kesteloot	61f85e228c	Add equality and inequality operators.	2018-08-03 16:41:52 -07:00
Lawrence Kesteloot	e02aeeb9ec	Can subtract, multiply, and divide.	2018-08-03 16:25:57 -07:00
Lawrence Kesteloot	5a755ca3c5	Add IF/THEN statement.	2018-08-03 15:31:11 -07:00
Lawrence Kesteloot	86b0e366bd	Pass base address when disassembling.	2018-08-03 14:27:16 -07:00
Lawrence Kesteloot	f73bd75654	Add backwards GOTO.	2018-08-03 14:20:04 -07:00
Lawrence Kesteloot	d9594ce3ad	More robust parsing of variable name.	2018-08-03 13:31:31 -07:00
Lawrence Kesteloot	0d579ce354	Can read from variables in expressions.	2018-08-03 13:19:29 -07:00
Lawrence Kesteloot	fd8aa963d4	Can assign to variables.	2018-08-03 13:09:02 -07:00
Lawrence Kesteloot	109a0af072	Add NEW; report line number of error.	2018-08-03 12:02:14 -07:00
Lawrence Kesteloot	e3f29f7dc5	RUN works.	2018-08-03 11:35:15 -07:00
Lawrence Kesteloot	fbed276344	Clear to EOL after Enter.	2018-08-03 00:02:40 -07:00
Lawrence Kesteloot	5d453e8f58	Scroll screen; remove volatile.	2018-08-02 18:59:31 -07:00
Lawrence Kesteloot	6d7af284a1	Break runtime into different C file.	2018-08-02 16:26:42 -07:00
Lawrence Kesteloot	794a9bb121	Pass map file to emulator.	2018-08-02 16:06:52 -07:00
Lawrence Kesteloot	9175c4c234	Reduce unnecessary push/pop in expression compilation.	2018-08-02 14:52:23 -07:00
Lawrence Kesteloot	e95f2cf67f	Add POKE statement.	2018-08-02 14:44:18 -07:00
Lawrence Kesteloot	d6093b9678	Support expressions of sums.	2018-08-02 00:45:58 -07:00
Lawrence Kesteloot	b9b4b6fded	Can print single integer.	2018-08-01 23:29:37 -07:00
Lawrence Kesteloot	e2199b66fe	Add only one terminating nul, not three.	2018-08-01 18:49:21 -07:00
Lawrence Kesteloot	38a15160ed	Can insert, delete, and replace stored lines.	2018-08-01 15:08:56 -07:00
Lawrence Kesteloot	ca49e6e511	Better stored program linked list management.	2018-08-01 14:58:29 -07:00
Lawrence Kesteloot	a324d8814b	Switch to explicit int types (uint16_t, etc.).	2018-08-01 13:37:31 -07:00
Lawrence Kesteloot	a57bbe3c65	Start stored program work.	2018-08-01 13:34:26 -07:00
Lawrence Kesteloot	491f8ef1b5	Add g_ prefix to global variables.	2018-08-01 10:58:03 -07:00
Lawrence Kesteloot	3b1aacd06b	Rename 'binary' to 'compiled'.	2018-08-01 10:56:48 -07:00
Lawrence Kesteloot	bf8400b50c	Tokenize input buffer.	2018-08-01 10:44:24 -07:00
Lawrence Kesteloot	3260180fb7	Add hard-coded print statement.	2018-07-31 23:19:15 -07:00
Lawrence Kesteloot	655b397d86	Can put multiple instructions per line.	2018-07-31 20:47:05 -07:00
Lawrence Kesteloot	a175e99178	Compile and run simple command.	2018-07-31 15:03:06 -07:00
Lawrence Kesteloot	eba8aa7637	Test code that breaks emulator.	2018-07-31 13:42:21 -07:00
Lawrence Kesteloot	d5ede1617d	Simple line input.	2018-07-31 12:48:29 -07:00
Brad Grantham	128509fdcd	add initial keyboard_get()	2018-07-31 12:02:26 -07:00
Lawrence Kesteloot	f66faacda9	Draw BASIC prompt.	2018-07-31 00:05:22 -07:00
Brad Grantham	fadcda8050	use 40 columns for screen	2018-07-28 12:12:40 -07:00
Brad Grantham	d30e8778d5	initial commit	2018-07-27 22:30:44 -07:00