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Rev Log message Author Age Path
61 overrun signal was moved to separate block because many sequential lsr
reads were preventing data from being written to rx fifo.
underrun signal was not used and was removed from the project.
mohor 8247d 19h /
60 Things related to msr register changed. After THRE IRQ occurs, and one
character is written to the transmit fifo, the detection of the THRE bit in the
LSR is delayed for one character time.
mohor 8247d 23h /
59 MSR register fixed. mohor 8250d 20h /
58 After reset modem status register MSR should be reset. mohor 8251d 00h /
57 timeout irq must be set regardless of the rda irq (rda irq does not reset the
timeout counter).
mohor 8251d 23h /
56 thre irq should be cleared only when being source of interrupt. mohor 8252d 00h /
55 some synthesis bugs fixed gorban 8252d 11h /
54 LSR status bit 0 was not cleared correctly in case of reseting the FCR (rx fifo). mohor 8253d 01h /
53 Scratch register define added. mohor 8254d 01h /
52 Scratch register added gorban 8254d 14h /
51 Igor fixed break condition bugs gorban 8254d 14h /
50 Bug in LSR[0] is fixed.
All WISHBONE signals are now sampled, so another wait-state is introduced on all transfers.
gorban 8258d 19h /
49 committed the debug interface file gorban 8260d 12h /
48 Updated specification documentation.
Added full 32-bit data bus interface, now as default.
Address is 5-bit wide in 32-bit data bus mode.
Added wb_sel_i input to the core. It's used in the 32-bit mode.
Added debug interface with two 32-bit read-only registers in 32-bit mode.
Bits 5 and 6 of LSR are now only cleared on TX FIFO write.
My small test bench is modified to work with 32-bit mode.
gorban 8261d 12h /
47 Fixed: timeout and break didn't pay attention to current data format when counting time gorban 8266d 14h /
46 Fixed bug that prevented synthesis in uart_receiver.v gorban 8267d 11h /
45 Lots of fixes:
Break condition wasn't handled correctly at all.
LSR bits could lose their values.
LSR value after reset was wrong.
Timing of THRE interrupt signal corrected.
LSR bit 0 timing corrected.
gorban 8268d 12h /
44 fixed more typo bugs gorban 8282d 12h /
43 lsr1r error fixed. mohor 8282d 19h /
42 ti_int_pnd error fixed. mohor 8282d 19h /
41 ti_int_d error fixed. mohor 8282d 19h /
40 Synthesis bugs fixed. Some other minor changes gorban 8284d 21h /
39 Comments in Slovene language deleted, few small fixes for better work of
old tools. IRQs need to be fix.
mohor 8286d 19h /
38 small update to test interrupts gorban 8287d 16h /
37 Heavily rewritten interrupt and LSR subsystems.
Many bugs hopefully squashed.
gorban 8287d 16h /
36 no message mohor 8293d 00h /
35 Fixes to break and timeout conditions gorban 8294d 18h /
34 fixed parity sending and tx_fifo resets over- and underrun gorban 8296d 17h /
33 Small synopsis fixes gorban 8306d 00h /
32 Changes data_out to be synchronous again as it should have been. gorban 8306d 17h /

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