Diagnostic Test
| 1. |
Insert
the demonstration media into drive, then copy diagnostic program into
your computer. |
| 2. |
Key
in the BASIC test program, then type run. (please refer section 3) |
| 3. |
The
screen will display: |
|
which selection do
you want? 1.
D/A MODE
2.
A/D MODE
|
|
| 4. |
If
you select “1. D/A MODE”, pin 2 of D-type connector will output 16
steps saw-tooth wave. |
| 5. |
If
you select “2. A/D MODE”, screen will display each value (from 0 to
4095 of the 16 channel). |
| 1.Analog
to digital (A/D) procedure |
|||
| (1) | Output
channel number to port OUT port , channel |
||
| (2) | Clear
register OUT (port+3) , 0 |
||
| (3) | Start
convert FOR I = 1 to 5 A = INP(port + 4) NEXT I FOR I = 1 to 9 A = INP(port + 5) NEXT I |
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| (4) |
Read
high byte (low nibble) C = INP(port +2) HB = (C/16 - INT(C/16)) * 16 |
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| (5) |
Read
low byte (8 bits) LB = INP(port + 1) |
||
| (6) |
Data AD = HB * 256 + LB |
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| 2.Digital to analog (D/A) procedure | |||
| (1) |
Output high byte (low
nibble) OUT port + 7, Hdata |
||
| (2) |
Output low byte (8 bits) OUT port + 6, Ldata |
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|
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20 LOCATE 5,18: PRINT “ 12 BIT AD-DA CONVERSION CARD”
30 LOCATE 6,18: PRINT “=======================”
40 LOCATE 9,20: PRINT “1. D/A CONVERSION DEMO”
50 LOCATE 11,20: PRINT “2. A/D CONVERSION DEMO”
60 A$=INKEY$: IF A$=”” THEN 60
70 IF A$=”1” THEN 200
80 IF A$=”2” THEN 400
90 GOTO 10
200 CLS
202 LOCATE 5,15: PRINT “D/A CINVERSION DEMO”
204 LOCATE 7,15: PRINT “OUTPUT WAVEFORM FROM D/A PORT”
206 LOCATE 9,15: PRINT “PRESS ANY KEY RETURN MENU”
210 OUT PORT+6,0
220 FOR I = 0 TO 15
230 OUT PORT+7, I
240 NEXT I
250 A$=INKEY$: IF A$=”” THEN 210
260 GOTO 10
400 CLS
410 FOR CHANNEL = 0 TO 15
420 GOSUB 550
430 B = INP(PROT+2)
440 C = INP(PORT+1)
450 D = (B-16*(INT(B/16))) *256 + C
460 PRINT “ CHANNEL= “; CHANNEL, “DATA= “:D
470 NEXT CHANNEL
480 PRINT:PRINT:PRINT
490 GOTO 410
550 OUT PORT+3,0
560 OUT PORT+0, CHANNEL
570 FOR I = 1 TO 5: A= INP(PORT+4):NEXT I
580 FOR I = 1 TO 9: A= INP(PORT+5):NEXT I
590 RETURN