Tandy 1000 Programmer's Reference Guide

Chapter 1 I System Calls
GetTime
Get Time Function Call 2CH
Returns the current time set in the operating system as
binary numbers.
Entry Conditions:
AH = 2CH
Exit Conditions:
CH = hour (0-23)
CL = minutes (0-59)
DH = seconds (0-59)
DL = hundredths of a second (0-99)
Macro Definition:
get-time macro
mov ah ,2CH
int 21H
endm
Example:
The following program continuously displays the time until
any key is pressed.
time db
ten db 10
"00 : 0 0 : 00. OB", 1 3,l 0 , "$"
func-2CH: get-time
convert ch,ten,time
convert cl,ten,time[31
convert dh,ten,time[61
convert dl,ten,time[91
display time
check-tbd-status
CmP a1,BFFH
le all-done
Imp func-2CH
all-done: ret
;THIS FUNCTION
;5ee end of chapter
;5ee end of chapter
;5ee end of chapter
;5ee end of chapter
;5ee Function 09H
;5ee Function 0BH
;ha5 a key been pressed?
;yes, terminate
;no, display time
88

Tandy 1000 Specifications

General

Processor	Intel 8088
Processor Speed	4.77 MHz
RAM	128 KB (expandable to 640 KB)
Operating System	MS-DOS 2.11
Manufacturer	Tandy Corporation
Release Year	1984
Storage	Single or double 5.25" floppy disk drive (360 KB), optional hard drive
Sound	Tandy 3-voice sound
Ports	Parallel, Serial
Graphics	CGA (Color Graphics Adapter)
Graphics Modes	320x200, 640x200