Technical information

TECHNICAL INFORMATION
(Real-Time Clock Code, continued)
INC
HL
POINT TO MINUTES AND
INC
(HL)
INCREMENT
LD
A, (IlL)
;
GET MINUTES COUNT
CP
60
JR C,XIT
DONE IF NO CARRY
XOR A
ELSE RESET MINUTES
LD
(HL) ,A
INC
HL
POINT TO HOURS
AND
INC
(HL)
UPDATE
LD
A, (HL)
GET HOURS
CP
24
24-HOUR
CLOCK
JR
C,XIT
DONE IF NO CARRY
XOR
~HL) A
ELSE RESET
HOURS
LD
XIT
LD
A,(3~EOH)
TO RESET LATCH
p8p
ilE
RESTORE REGS AND EXIT
MT
ENABLE INTERRUPTS
FDC
A, (37ECH)
RESET
FDC IRQ RQST
~~D
OS~
23