 Paul Gardner-Stephen
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86a579e91c
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don't corrupt Y register in iec_wait60ns
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2019-05-01 22:45:02 +09:30 |
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Paul Gardner-Stephen
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568bbb1cb2
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fix iec_release_clk to release correct bit
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2019-05-01 22:44:29 +09:30 |
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Paul Gardner-Stephen
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3a8200d66d
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IEC serial bytes have 8 bits, not 9. Fix logic to count 8 bits on TX
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2019-05-01 22:16:33 +09:30 |
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Paul Gardner-Stephen
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7caae74955
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move debug code for testing IEC bus
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2019-05-01 22:12:33 +09:30 |
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Paul Gardner-Stephen
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9f0880ed7e
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fix sense of DATA line reading.
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2019-05-01 22:11:17 +09:30 |
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Paul Gardner-Stephen
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38b35d05ad
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fix asserting ATN line.
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2019-05-01 22:10:57 +09:30 |
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Paul Gardner-Stephen
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af7e93476c
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setup DDR for IEC serial bus
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2019-05-01 21:52:22 +09:30 |
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Paul Gardner-Stephen
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687ed9c56a
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more work towards IEC bus. Also don't corrupt $DD00 VIC-II bank bits in the process.
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2019-05-01 21:47:00 +09:30 |
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Paul Gardner-Stephen
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16dcfbe22b
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begin implementing IEC serial protocol.
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2019-05-01 21:40:32 +09:30 |
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Paul Gardner-Stephen
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27b33c2b26
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use more space efficient calling convention for calling errors
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2019-05-01 07:37:52 +09:30 |
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Paul Gardner-Stephen
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b45e7aab65
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RUN does implicit CLR
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2019-04-29 23:23:30 +09:30 |
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Paul Gardner-Stephen
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f439cb0a83
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correctly detect end of program
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2019-04-29 23:21:46 +09:30 |
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Paul Gardner-Stephen
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dec1ce257d
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simplify BASIC execution logic
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2019-04-29 23:10:10 +09:30 |
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Paul Gardner-Stephen
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8ecd10d5cd
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implement SYS command.
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2019-04-29 23:02:22 +09:30 |
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Paul Gardner-Stephen
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0d891bb06a
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consume white space when checking for end of statement
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2019-04-29 22:41:51 +09:30 |
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Paul Gardner-Stephen
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6df769320a
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parse line number argument in RUN statement
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2019-04-29 22:40:24 +09:30 |
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Paul Gardner-Stephen
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65af677caa
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factor out basic line number parsing routine
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2019-04-29 22:36:25 +09:30 |
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Paul Gardner-Stephen
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270314640c
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refactor end of statement check.
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2019-04-29 22:27:58 +09:30 |
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Paul Gardner-Stephen
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3bdfa8f834
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make injest_number work from current basic statement pointer
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2019-04-29 22:25:03 +09:30 |
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Paul Gardner-Stephen
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7c960fd6b4
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implement RUN command. Show line number in errors when in program mode.
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2019-04-29 22:20:02 +09:30 |
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Paul Gardner-Stephen
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995dc52967
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work towards being able to run programs
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2019-04-29 22:16:00 +09:30 |
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Paul Gardner-Stephen
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b15ddafa6a
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allow multiple statements on single line. Issue #14
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2019-04-29 22:05:27 +09:30 |
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Paul Gardner-Stephen
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3a58c781c7
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carriage return clears quote and insert modes
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2019-04-29 22:05:12 +09:30 |
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Paul Gardner-Stephen
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b44869c87b
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fix handling of Vendor key combo parsing when screen scraping keyboard input
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2019-04-29 21:53:06 +09:30 |
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Paul Gardner-Stephen
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38c3f158d2
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Fix display of shift+key combos in REM and quote strings. Issue #11
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2019-04-29 21:44:29 +09:30 |
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Paul Gardner-Stephen
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b5ab7ba10c
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fix CHROUT handling of most character codes
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2019-04-29 21:36:56 +09:30 |
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Paul Gardner-Stephen
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8ffe1b61da
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fix display of quoted control codes. Issue #11
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2019-04-29 21:25:23 +09:30 |
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Paul Gardner-Stephen
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366ee483cb
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Simplify and improve control code detection
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2019-04-29 21:19:04 +09:30 |
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Paul Gardner-Stephen
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2b9f1cc2ee
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Fix Issue #17
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2019-04-29 21:12:01 +09:30 |
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Paul Gardner-Stephen
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67ac641741
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make LIST command honour REM and quotes.
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2019-04-29 21:08:53 +09:30 |
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Paul Gardner-Stephen
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bc5e3cdbb9
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Fix Issue #15
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2019-04-29 21:00:00 +09:30 |
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Paul Gardner-Stephen
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71567e39ac
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LIST now largely works.
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2019-04-28 22:48:03 +09:30 |
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Paul Gardner-Stephen
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8c84566e53
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begin implementing LIST command printing of line bodies
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2019-04-28 22:37:11 +09:30 |
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Paul Gardner-Stephen
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c7db426bd3
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begin implementing LIST command
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2019-04-28 22:30:49 +09:30 |
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Paul Gardner-Stephen
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6a0b2d8e7f
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implement beginnings of BASIC main loop execution
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2019-04-28 22:10:32 +09:30 |
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Paul Gardner-Stephen
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06a227696e
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begin implementing BASIC command loop
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2019-04-28 21:59:02 +09:30 |
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Paul Gardner-Stephen
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30e900e2cf
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implement syntax error as default behaviour
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2019-04-28 21:51:44 +09:30 |
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Paul Gardner-Stephen
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249266232c
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begin implementing framework for interpreting BASIC statements.
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2019-04-28 21:50:52 +09:30 |
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Paul Gardner-Stephen
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3ab4f385ac
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fix printing of integers and BASIC free bytes on startup
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2019-04-28 21:36:33 +09:30 |
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Paul Gardner-Stephen
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0c05cd335f
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fix inverted sense of cartridge detect in free RAM calculation
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2019-04-28 21:27:31 +09:30 |
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Paul Gardner-Stephen
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9ac00426f3
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display correct # of basic bytes free on startup
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2019-04-28 21:26:33 +09:30 |
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Paul Gardner-Stephen
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2193cf9520
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fix integer printing routine
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2019-04-28 21:21:53 +09:30 |
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Paul Gardner-Stephen
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c1a85217a0
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work towards printing integers
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2019-04-28 21:19:41 +09:30 |
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Paul Gardner-Stephen
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e0bd266f6e
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don't print READY after entering, modifying or deleting a line of BASIC
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2019-04-28 20:51:54 +09:30 |
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Paul Gardner-Stephen
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4a4e6ddbb9
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fix Issue #13
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2019-04-28 20:48:46 +09:30 |
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Paul Gardner-Stephen
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f43fedea21
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remove more debug output
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2019-04-28 20:44:05 +09:30 |
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Paul Gardner-Stephen
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ced0eeb319
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disable debug output in basic line inserting, deleting and replacing
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2019-04-28 20:41:38 +09:30 |
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Paul Gardner-Stephen
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ff10535447
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fix deleting line bugs
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2019-04-28 20:39:15 +09:30 |
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Paul Gardner-Stephen
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696c908483
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fix bugs in calculation of memory range to copy down.
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2019-04-28 20:33:07 +09:30 |
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Paul Gardner-Stephen
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906fe108b3
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work towards being able to delete BASIC lines
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2019-04-28 20:27:19 +09:30 |
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