Octagon 6000 Series, User Manual

Page: 129 / 233

Counter timer controller 6000 Series user’s manual
15-10
Return registers: Carry flag cleared if successful
Carry flag set if error
AL
Error code
Comments: This function shall be used to initialize CTC.
Programming example:
/* Inline assembly code for Borland C++ 3.1 */
/* To configure channel 0 to generate IRQ 12
interrupt every 1s */
/* To configure channel 1 to generate IRQ 11
interrupt every 10s */
asm {
mov ax,0ee00h
mov bl,01h /* timebase = 1/100*/
mov bh,00h /* 1.8432 MHz input clock
frequency */
mov cl,00h /* channel 0 used as square
wave generator */
mov ch,01h /* channel 1, used as rate
generator */
mov si,100 /* channel 0 period =
(1/100)*100 = 1s */
mov di,1000 /* channel 1 period =
(1/100)*1000 = 10s */
mov dx,0ffffh
int 17h
}
Error code definition:
Error code Meaning
ffh Unknown error
01h Function not implemented
02h Defective serial EEPROM
03h Illegal access
04h EZ I/O data out of range
05h CTC data out of range
Note Refer to the \CTC directory on the 6020 utility disk for programming
examples.
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CAMBASIC
CAMBASIC can program the CTC with the INT 17H commands. Refer to
the \CTC directory in the 6020 utility disk for CAMBASIC programming
examples.