Frans Kaashoek
7086197c27
Simplify uartputc slightly (thanks Harry Porter)
2022-08-22 19:36:11 -04:00
Frans Kaashoek
dd5a720044
cosmetic changes (thanks Harry Porter)
2022-08-12 10:57:16 -04:00
amane-uehara
dd6d5d0a41
I fixed a typo in the comment.
2021-08-31 14:16:59 -04:00
Robert Morris
329935eca8
fix uart.c to work with UART_TX_BUF_SIZE == 1
2020-11-05 06:56:51 -05:00
Matt Harvey
6781ac0036
Corrects order of UART RX/TX interrupt enable bits
...
(per http://byterunner.com/16550.html and manually tested in qemu bare metal echo)
2020-09-14 14:49:57 -07:00
Robert Morris
490f91ab53
move panicked check to uart.c
2020-08-28 09:00:41 -04:00
Robert Morris
2ae9c8e272
defines for UART register bits
2020-08-10 11:19:10 -04:00
Robert Morris
0f50e9527c
fix printf() in interrupts
2020-08-10 11:19:10 -04:00
Robert Morris
27057bc9b4
interrupt-driven uart output, hopefully a nice example for teaching.
2020-08-10 11:19:10 -04:00
Robert Morris
1ec50c5848
xxx
2019-07-28 07:43:22 -04:00
Robert Morris
629faafa36
cleaner UART register interface
2019-07-27 06:44:24 -04:00
Robert Morris
a33f60fea3
console/uart tweaks
2019-07-27 05:47:19 -04:00
Frans Kaashoek
67702cf706
Checkpoint switching to per-process locks, in attempt clarify xv6's
...
locking plan, which is a difficult to understand because ptable lock
protects many invariants. This implementation has a bug: once in a
while xv6 unlocks a proc lock that is locked by another core.
2019-07-02 09:14:47 -04:00
Robert Morris
5753553213
separate source into kernel/ user/ mkfs/
2019-06-11 09:57:14 -04:00