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[/] [or1k/] [tags/] [nog_patch_42/] [or1ksim/] [peripheral/] [16450.c] - Rev 1143

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1143 Make UART transmitter-empty interrupts match both 16450 and 16550 behavior. sfurman 7828d 17h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
1116 There was a bug in the simulator's UART implementation that caused the
UART's LSR register to become corrupted. This was due to an
assumption that 'char' is an unsigned type, but that is not true on
all platforms.

When the char type is signed and a character is read in the range
0x80-0xff, the high bit is sign-extended into the upper bits of an
entry in the receive FIFO. When the character reaches the head of the
FIFO, the upper bits of the FIFO entry are OR'ed into the LSR, causing
the LSR to be set to 0xFF.

A simple cast fixes the problem.
sfurman 7869d 01h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
1073 channels support rprescott 7994d 05h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
997 PRINTF should be used instead of printf; command redirection repaired markom 8057d 15h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
970 Testbench is now running on ORP architecture platform. simons 8065d 02h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
884 code cleaning - a lot of global variables moved to runtime struct markom 8101d 13h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
821 ugly bug with duplicate redefined i removed markom 8187d 09h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
806 uart now partially uses scheduler markom 8192d 16h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
805 kbd, fb, vga devices now uses scheduler markom 8192d 16h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
713 lot of small minor improvements: code documented, cleaned; runs at about same speed when not actually logging, but exe_log is enabled; raw_stats now run only with simple execution - enable RAW_USAGE_STATS macro markom 8229d 14h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
549 enabled parameters removed from devices, which also have number of devices; command line --output-cfg parameter added markom 8283d 10h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
530 THRI interrupt fixed. simons 8286d 03h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
529 Bug in receiver fixed. simons 8286d 05h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
492 uart THRE interrupt immedialty after write to IER markom 8302d 13h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
490 clkcycle parsing problem fixed markom 8303d 09h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
424 memory configuration file joined into .cfg file; *mem.cfg are obsolete; read-only and write-only memory is supported; memory logging is not yet supported; update of testbench - only cache test fails, since it writes to RO memory markom 8312d 13h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
423 changed break behaviour and interrupt pending; interrupt line chabnged to 15; sync bug in mode switch markom 8313d 08h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
411 acv uart testsuite now works (without modem test) markom 8316d 13h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
409 some minor changes to or1ksim; Testbench except.s modified. Interrupt test almost finished for uart ACV. markom 8317d 13h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c
385 check testbench now modified to work with new report output markom 8326d 10h /or1k/tags/nog_patch_42/or1ksim/peripheral/16450.c

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