| 79:0338c4362083 | ||||
| 2018-10-30 | Paul Boddie | changeset files shortlog graph | Employ a more sensible LED blinking frequency in the exception handler. | |
| examples/demo/main.c examples/vga/main.c | ||||
| 78:e5fd5d81a72a | ||||
| 2018-10-30 | Paul Boddie | changeset files shortlog graph | Added a bitmap font, a conversion tool, and library code to blit characters. | |
| data/font.S data/font.txt examples/vga-dual/Makefile examples/vga-dual/font.S examples/vga-pmp/Makefile examples/vga-pmp/font.S examples/vga-timer/Makefile examples/vga-timer/font.S examples/vga/Makefile examples/vga/font.S ... | ||||
| 77:d103800bffda | ||||
| 2018-10-30 | Paul Boddie | changeset files shortlog graph | Included VGA definitions to support ordering-independent inclusion of this file. | |
| include/display_config.h | ||||
| 76:b2241b813d16 | ||||
| 2018-10-30 | Paul Boddie | changeset files shortlog graph | Defined code to follow the main function in case it wants to return somewhere. | |
| lib/start.S | ||||
| 75:f9acc9c732f1 | ||||
| 2018-10-30 | Paul Boddie | changeset files shortlog graph | Fixed invocation of the interrupt handler function, avoiding $gp usage. The absence of any computation of $gp in the handler routine meant that where such computations (in function prologues, for instance) were being interrupted, a corrupt $gp was being used, causing an exception. Changed the exception handler routine to switch to the IRQ stack and to use the appropriate calling convention. | |
| lib/cpu.S | ||||
| 74:32cb6b232444 | ||||
| 2018-10-29 | Paul Boddie | changeset files shortlog graph | Improved the blitting code to permit saving and restoring framebuffer data and for blitting with a key colour for transparency. Introduced a sprite to test the blitting code. Established a function to introduce delays in the example code. | |
| examples/vga-dual/Makefile examples/vga-dual/sprite.S examples/vga-pmp/Makefile examples/vga-pmp/sprite.S examples/vga-timer/Makefile examples/vga-timer/sprite.S examples/vga/Makefile examples/vga/main.c examples/vga/sprite.S include/display.h ... | ||||
| 73:812e66b7ad47 | ||||
| 2018-10-29 | Paul Boddie | changeset files shortlog graph | Added options to strip/avoid padding the output image, and to use byte-aligned instead of word-aligned/padded data. Embed the options in the generated output for subsequent reference. | |
| tools/makeimage.py | ||||
| 72:3981a018d7e0 | ||||
| 2018-10-28 | Paul Boddie | changeset files shortlog graph | Incorporated the parallel mode configuration into the vga example code. | |
| examples/vga-pmp/Makefile examples/vga-pmp/main.c examples/vga/main.c | ||||
| 71:6c30c4c39803 | ||||
| 2018-10-28 | Paul Boddie | changeset files shortlog graph | Moved framebuffer initialisation to after the point of interrupts being enabled. This should no longer crash, thanks to the preservation of the accumulator registers. | |
| examples/vga/main.c | ||||
| 70:25aa0d4ffa88 | ||||
| 2018-10-28 | Paul Boddie | changeset files shortlog graph | Save and restore the accumulator registers. Otherwise, certain operations, such as those coincidentally employed in the framebuffer copying function, are disrupted and cause erroneous program operations to be performed. | |
| lib/cpu.S | ||||