Skip to content

port 60h is consuming and "caching" #136

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
donno2048 wants to merge 1 commit into
base: master
Choose a base branch
from
Open

port 60h is consuming and "caching" #136

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
8 changes: 7 additions & 1 deletion src/keyb.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -500,11 +500,17 @@ static uint8_t keyb_command = 0;
// Handle keyboard controller port reading
uint8_t keyb_read_port(unsigned port)
{
static uint8_t last_key = 0;
if(queued_key == -1)
kbhit();
debug(debug_int, "keyboard read_port: %02X (key=%04X)\n", port, 0xFFFFU & queued_key);
if(port == 0x60)
return queued_key >> 8;
{
if(queued_key != -1)
last_key = queued_key >> 8;
queued_key = -1;
return last_key;
}
else if(port == 0x61)
return portB_ctl; // Controller B, used for speaker output
else if(port == 0x64)
Expand Down