diff options
Diffstat (limited to 'c/src/lib/libbsp/i386/go32/include/bsp.h')
| -rw-r--r-- | c/src/lib/libbsp/i386/go32/include/bsp.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/c/src/lib/libbsp/i386/go32/include/bsp.h b/c/src/lib/libbsp/i386/go32/include/bsp.h index 9e07f13f09..a41d57dc77 100644 --- a/c/src/lib/libbsp/i386/go32/include/bsp.h +++ b/c/src/lib/libbsp/i386/go32/include/bsp.h @@ -38,15 +38,14 @@ extern "C" { /* * Define the interrupt mechanism for Time Test 27 * - * NOTE: Use a software interrupt for the i386. + * NOTE: Use a software interrupt for the i386 family. */ -#define MUST_WAIT_FOR_INTERRUTPT 0 +#define MUST_WAIT_FOR_INTERRUPT 0 #define Install_tm27_vector( handler ) set_vector( (handler), 0x90, 1 ) #define Cause_tm27_intr() asm volatile( "int $0x90" : : ); #define Clear_tm27_intr() #define Lower_tm27_intr() - /* * Simple spin delay in microsecond units for device drivers. * This is very dependent on the clock speed of the target. @@ -105,6 +104,11 @@ extern "C" { #define TIMER_16BIT 0x30 /* r/w counter 16 bits, LSB first */ #define TIMER_BCD 0x01 /* count in BCD */ +#define CLOCK_DISABLE() \ + ({ char mask; inport_byte( 0x21, mask ); outport_byte( 0x21, mask | 1 ); }) +#define CLOCK_ENABLE() \ + ({ char mask; inport_byte( 0x21, mask ); outport_byte( 0x21, mask & ~1); }) + /* The internal tick rate in ticks per second */ #define TIMER_TICK 1193182 #define US_TO_TICK(us) (((us)*105+44)/88) @@ -154,3 +158,4 @@ i386_isr_entry set_vector( #endif /* end of include file */ + |