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authorBen Burwell <ben@benburwell.com>2015-04-01 20:37:15 -0400
committerBen Burwell <ben@benburwell.com>2015-04-01 20:37:15 -0400
commitd8463e5ebbf8805c30ee6402e6667eb5f78446cc (patch)
tree9317f2ad23d89656be96fa224b04365ebf14dc57 /printer.c
parent684fc27f6389f44102b5a3b31f62badc35a9a9ce (diff)
as of 2013-12-062013-12-06
Diffstat (limited to 'printer.c')
-rw-r--r--printer.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/printer.c b/printer.c
index 6eab61e..60e96e3 100644
--- a/printer.c
+++ b/printer.c
@@ -15,7 +15,6 @@ int prt_opened;
int prt_open(int * prt_flag) {
unsigned char imr;
- unsigned char pcr;
disable();
@@ -48,7 +47,6 @@ int prt_open(int * prt_flag) {
}
int prt_write(char far *buffer, int far *length) {
- unsigned char pcr;
disable();
// check that prt isn't busy
@@ -89,7 +87,6 @@ int prt_write(char far *buffer, int far *length) {
}
int prt_close() {
- unsigned char pcr;
unsigned char imr;
disable();
@@ -114,8 +111,8 @@ int prt_close() {
void interrupt prt_int() {
unsigned char pcr;
int *lst_stk;
- float temp;
+ disable();
lst_stk = _BP;
// if no more char to write
@@ -131,7 +128,6 @@ void interrupt prt_int() {
*(prt.event_flag) = 1;
// call io-complete
- // TODO: the book says (pg 86) that there should be stuff passed to io-complete
IO_complete(PRT, lst_stk);
// send end of interrupt signal
@@ -153,4 +149,5 @@ void interrupt prt_int() {
// send EOI
outportb(0x20, 0x20);
+ enable();
} \ No newline at end of file