1 files changed, 0 insertions, 45 deletions
diff --git a/8253pit.c b/8253pit.c
deleted file mode 100644
index 1d98dc1..0000000
--- a/8253pit.c
+++ /dev/null
@@ -1,45 +0,0 @@
-#include "types.h"
-#include "defs.h"
-#include "traps.h"
-#include "x86.h"
-
-// Register definitions for the Intel
-// 8253/8254/82C54 Programmable Interval Timer (PIT).
-
-#define IO_TIMER1       0x040           // 8253 Timer #1
-#define IO_TIMER2       0x048           // 8253 Timer #2 (EISA only)
-
-// Frequency of all three count-down timers; (TIMER_FREQ/freq) is the
-// appropriate count to generate a frequency of freq hz.
-
-#define TIMER_FREQ      1193182
-#define TIMER_DIV(x)    ((TIMER_FREQ+(x)/2)/(x))
-
-#define TIMER_CNTR0     (IO_TIMER1 + 0) // timer 0 counter port
-#define TIMER_CNTR1     (IO_TIMER1 + 1) // timer 1 counter port
-#define TIMER_CNTR2     (IO_TIMER1 + 2) // timer 2 counter port
-#define TIMER_MODE      (IO_TIMER1 + 3) // timer mode port
-#define TIMER_SEL0      0x00    // select counter 0
-#define TIMER_SEL1      0x40    // select counter 1
-#define TIMER_SEL2      0x80    // select counter 2
-#define TIMER_INTTC     0x00    // mode 0, intr on terminal cnt
-#define TIMER_ONESHOT   0x02    // mode 1, one shot
-#define TIMER_RATEGEN   0x04    // mode 2, rate generator
-#define TIMER_SQWAVE    0x06    // mode 3, square wave
-#define TIMER_SWSTROBE  0x08    // mode 4, s/w triggered strobe
-#define TIMER_HWSTROBE  0x0a    // mode 5, h/w triggered strobe
-#define TIMER_LATCH     0x00    // latch counter for reading
-#define TIMER_LSB       0x10    // r/w counter LSB
-#define TIMER_MSB       0x20    // r/w counter MSB
-#define TIMER_16BIT     0x30    // r/w counter 16 bits, LSB first
-#define TIMER_BCD       0x01    // count in BCD
-
-void
-pit8253_timerinit(void)
-{
-  // initialize 8253 clock to interrupt 100 times/sec
-  outb(TIMER_MODE, TIMER_SEL0 | TIMER_RATEGEN | TIMER_16BIT);
-  outb(IO_TIMER1, TIMER_DIV(100) % 256);
-  outb(IO_TIMER1, TIMER_DIV(100) / 256);
-  irq_enable(IRQ_TIMER);
-}