diff options
Diffstat (limited to 'results/classifier/deepseek-2-tmp/output/peripherals/1381846')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/output/peripherals/1381846 | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/results/classifier/deepseek-2-tmp/output/peripherals/1381846 b/results/classifier/deepseek-2-tmp/output/peripherals/1381846 deleted file mode 100644 index ff57996b..00000000 --- a/results/classifier/deepseek-2-tmp/output/peripherals/1381846 +++ /dev/null @@ -1,9 +0,0 @@ - -Data sent to parallel port in guest is lost if host buffer fills up - -It appears that qemu will blindly write characters out to the chardev and drop them on the floor if a write fails with EAGAIN, without initiating flow control (via BUSY and ACK) back to the guest. If the host buffer is too small, or is talking to a hardware device that is too slow, data will be lost. - -I notice this problem when I run a DOS program with this on the qemu command line: --parallel /dev/usb/lp0 - -I can work around this problem by buffering via a pipe, but this looks like a general problem. Is there a way to wire up the readiness of the output chardev to the parallel port ACK and BUSY lines, and signal an ISA interrupt? I don't know the code well enough to tell. \ No newline at end of file |