windows-nt/Source/XPSP1/NT/multimedia/media/test/timetest/tefti.h
2020-09-26 16:20:57 +08:00

77 lines
2.2 KiB
C

/*
tefti.h
TEFTI DLL information and API definitions
*/
/* * * * * TEFTI TIMER BOARD * * * * *
;
; Base port address is variable depending on jumper settings of
; card. Port address will default to 220h, but can also be set
; for DLL to read from system.ini during initialization. This is
; particularly necessary for Multimedia Windows becuase the default
; port address for the SoundBlaster audio card is 220h.
;
; Jumper Definition
;
; --------------
; 20|
; | A7 A6 A5 A4
; 19|
; --------------
;
; Jumper defines the BASE address per the following table:
;
; A7 A6 A5 A4 system.ini port= entry
;
; 0 0 0 0 200h 200
; 0 0 0 1 210h 210
; 0 0 1 0 220h 220
; 0 0 1 1 230h 230
; 0 1 0 0 240h 240
; 0 1 0 1 250h 250
; 0 1 1 0 260h 260
; 0 1 1 1 270h 270
; 1 0 0 0 280h 280
; 1 0 0 1 290h 290
; 1 0 1 0 2A0h 300
; 1 0 1 1 2B0h 310
; 1 1 0 0 2C0h 320
; 1 1 0 1 2D0h 330
; 1 1 1 0 2E0h 340
; 1 1 1 1 2F0h 350
;
;
; Jumper in place corresponds to '0' in that particular position.
;
; Frequency for counter 1 is variable depending on system.ini section
; or zero for default. counter 3 is chained to counter 1 to hold all
; overflow, producing a 32 bit counter value.
;
; Frequency setting are per the following table:
;
; Value Frequency Resolution Approx. Time to rollover (32 bit)
;
; 0 1Mhz 1 microsec 1hr. 11min. 57sec.
; 1 250Khz 4 microsec 4hr. 47min. 48sec.
; 2 62.5Khz 16 microsec 15hr. 11min. 12sec.
; 3 15.625Khz 64 microsec 60hr. 44min. 48sec.
; 4 7.8125Khz 256 microsec 242hr. 15min. 12sec.
; 5 976.5625Hz 1.024 millisec .
; 6 122.0703Hz 8.196 millisec a LONG . TIME!
; 7 30.5175Hz 32.784 millisec .
;
;* * * * * * * * * * * * * * * * * * */
void far pascal StartTimer(void);
void far pascal StopTimer(void);
void far pascal ResetTimer(void);
unsigned long far pascal GetTimer(void);
unsigned long far pascal SnapTimer(void);
WORD far pascal InitTimer(void);
short far pascal IT(void);
void far pascal EndTimer(void);