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Commit Graph

486 Commits

Author SHA1 Message Date
Thomas Harte
5d0c33d545 Corrects occasional TMS sprite glitching. 2017-12-12 22:19:33 -05:00
Thomas Harte
b0616ee10c Adds one-before-the-graphics as a line for video collection.
Thereby corrects sprites on line 0.
2017-12-12 21:35:33 -05:00
Thomas Harte
f957344ac4 Corrects TMS failure to show background through tile layer. 2017-12-09 23:15:04 -05:00
Thomas Harte
b3fbd0f352 Tidies up some of the TMS' magic constants. 2017-12-09 23:08:07 -05:00
Thomas Harte
042edc72f7 Adjusts TMS declared timing so as to be in-phase with an NTSC clock, and adopts an alternative palette. 2017-12-09 22:28:34 -05:00
Thomas Harte
943418c434 Reformulates TMS sprite plotting to set the collision flag and to support magnified sprites. 2017-12-09 20:30:12 -05:00
Thomas Harte
7d7e2538bd Introduces a computationally simplified inner loop for TMS graphics modes, modelled on that for text. 2017-12-09 16:02:33 -05:00
Thomas Harte
7a544731e2 Makes minor tidiness improvements to the TMS. 2017-12-08 22:20:21 -05:00
Thomas Harte
e1914b4f16 Attempts to add a proper intermediate buffer for sprites to allow the split of collection and output. 2017-12-08 22:12:39 -05:00
Thomas Harte
8653eb8b55 Corrects various latent errors in optimised TMS video collection. 2017-12-06 20:24:29 -05:00
Thomas Harte
a4f0a260fd Reformulates the TMS graphics mode fetch loop to try to eliminate heavy conditionality. Temporarily introduces some sprite selection issues. 2017-12-05 22:39:03 -05:00
Thomas Harte
d4a53e82bb Replaces manual retread of memcpy with standard memcpy. 2017-12-05 18:21:34 -05:00
Thomas Harte
6eedc99286 Makes substantial optimisations to text mode.
Character optimisations to come.
2017-12-04 22:18:51 -05:00
Thomas Harte
a473338abe Makes minor type conversion fixes. 2017-12-03 22:24:48 -05:00
Thomas Harte
ad3df36c20 Corrects sprite information collection to cover all four. 2017-12-03 14:51:55 -05:00
Thomas Harte
38b11893e8 Takes first steps towards sprite display on the TMS. 2017-12-02 22:13:43 -05:00
Thomas Harte
e4534775b0 Cleans up and zooms in on the TMS slightly. 2017-12-02 17:48:31 -05:00
Thomas Harte
fe0cdc8d69 Corrects colour fetching in TMS Graphics II to be a function of row. 2017-12-02 16:10:29 -05:00
Thomas Harte
ca26ce8400 Slightly corrects style errors in the Cartridge hierarchy, and introduces mapping of .ROM to the MSX when appropriate. 2017-12-02 16:01:30 -05:00
Thomas Harte
d3dd8f3f2a Implements screen 2 addressing. 2017-12-02 14:05:52 -05:00
Thomas Harte
3c8d2d579d Resolves remaining sources of text mode instability. 2017-11-30 22:48:07 -05:00
Thomas Harte
edcbb3dfed Tidies code a little and thereby uncovers and corrects one cause of output instability. 2017-11-30 22:19:53 -05:00
Thomas Harte
9c8158753e Makes a first attempt at displaying text mode. 2017-11-30 21:35:26 -05:00
Thomas Harte
ee84f33ab5 Ensures that the 9918 admits that it is the source of interrupts. 2017-11-29 21:33:43 -05:00
Thomas Harte
aa4eef41d8 Seeks to introduce MSX interrupts. 2017-11-29 20:31:55 -05:00
Thomas Harte
ecd7d4731b Advances emulation to showing what looks like appropriate text on screen. 2017-11-28 21:27:15 -05:00
Thomas Harte
563aa051e4 Simplifies code a little and gives something on screen. 2017-11-28 21:19:28 -05:00
Thomas Harte
642bb8333f Introduces something of a first attempt at graphics collection and display. An unsuccessful attempt. 2017-11-28 21:10:30 -05:00
Thomas Harte
c558e86e03 Adds border colour output. 2017-11-27 22:05:40 -05:00
Thomas Harte
dbb14ea2e2 Corrects counting deficiencies that could produce an unstable display. 2017-11-27 21:36:12 -05:00
Thomas Harte
173e16b107 Corrects the 9918 so that it terminates. 2017-11-27 19:48:04 -05:00
Thomas Harte
7d2adad67e Adds the absolute most basic version of in-frame time keeping, to display a white square. 2017-11-27 19:43:33 -05:00
Thomas Harte
d33612def5 Ensures the MSX provides a clock to the VDP. 2017-11-26 20:07:30 -05:00
Thomas Harte
9cb6ca3440 Adds elementary decoding of VDP accesses. 2017-11-26 20:01:11 -05:00
Thomas Harte
0eb5dd9688 Introduces the fundamentals of bus routing for the MSX. 2017-11-26 16:47:59 -05:00
Thomas Harte
a14b53a9ab Adds a TMS9918 skeleton plus enough in the MSX to get to a blank screen in SDL/kiosk mode. 2017-11-26 13:28:26 -05:00