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[/] [or1k/] [tags/] [stable_0_1_0/] [or1ksim/] [peripheral/] [16450.c] - Rev 1145

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Rev Log message Author Age Path
1145 1) Fix trivial bug w/ transmitter empty interrupts that I introduced in the
last check-in.
2) Improve printed output from debugging-only uart_status() routine.
sfurman 7788d 08h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
1143 Make UART transmitter-empty interrupts match both 16450 and 16550 behavior. sfurman 7791d 04h /or1k/tags/stable_0_1_0/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 7831d 12h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
1073 channels support rprescott 7956d 16h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
997 PRINTF should be used instead of printf; command redirection repaired markom 8020d 02h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
970 Testbench is now running on ORP architecture platform. simons 8027d 12h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
884 code cleaning - a lot of global variables moved to runtime struct markom 8064d 00h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
821 ugly bug with duplicate redefined i removed markom 8149d 20h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
806 uart now partially uses scheduler markom 8155d 03h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
805 kbd, fb, vga devices now uses scheduler markom 8155d 03h /or1k/tags/stable_0_1_0/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 8192d 01h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
549 enabled parameters removed from devices, which also have number of devices; command line --output-cfg parameter added markom 8245d 21h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
530 THRI interrupt fixed. simons 8248d 14h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
529 Bug in receiver fixed. simons 8248d 16h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
492 uart THRE interrupt immedialty after write to IER markom 8265d 00h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
490 clkcycle parsing problem fixed markom 8265d 20h /or1k/tags/stable_0_1_0/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 8275d 00h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
423 changed break behaviour and interrupt pending; interrupt line chabnged to 15; sync bug in mode switch markom 8275d 19h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
411 acv uart testsuite now works (without modem test) markom 8279d 00h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c
409 some minor changes to or1ksim; Testbench except.s modified. Interrupt test almost finished for uart ACV. markom 8280d 00h /or1k/tags/stable_0_1_0/or1ksim/peripheral/16450.c

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