Appendix B
Specifications
112
Difference in Output According to Opened Peripheral Device
The following table shows the difference in instruction output, such as the PRINT instruction output, among the
peripheral devices designated by the OPEN instruction. After RESET, Port 1 is assigned to TERM and Port 2 is
assigned to LPRT automatically. There is no difference in output between Port 2 set to SCRN and Port 2 set to
COMU.
f
Output
∆
Output with a code added
X
Not output
Code
Abbreviation
TERM (see note
1)
SCRN (see note
2)
LPRT (see note 3)
COMU
Hexa-
deci-
mal
Deci-
mal
Port 1
Port 2
Port 1
Port 2
Port 1
Port 2
Port 1
Port 2
00
0
NUL
X
Not
used
X
f
f
f
f
f
01
1
SH
SOM
X
X
f
f
f
f
f
02
2
SX
EOA
X
X
f
f
f
f
f
03
3
EX
EOM
X
f
f
f
f
f
04
4
ET
EOT
X
X
f
f
f
f
f
05
5
EQ
WRU
X
X
f
f
f
f
f
06
6
AK
RU
X
X
f
f
f
f
f
07
7
BL
BEL
X
X
f
f
f
f
f
08
8
BS
FEO
∆
(see
note 4)
∆
(see
note 4)
f
f
f
f
f
09
9
HT
TAB
X
X
f
f
f
f
f
0A
10
LF
LF
X
X
f
f
f
f
f
0B
11
HM
VT
f
f
f
f
f
f
f
0C
12
CL
FF
f
f
f
f
f
f
f
0D
13
CR
CR
∆
(see
note 5)
∆
(see
note 5)
f
f
f
f
f
0E
14
SO
SO
X
X
f
f
f
f
f
0F
15
SI
SI
X
X
f
f
f
f
f
10
16
DE
DCO
X
Not
used
X
f
f
f
f
f
11
17
D1
XON
X
X
f
f
f
f
f
12
18
D2
TAP
X
X
f
f
f
f
f
13
19
D3
XOF
X
X
f
f
f
f
f
14
20
D4
TAP
X
X
f
f
f
f
f
15
21
NK
ERR
X
X
f
f
f
f
f
16
22
SN
SYN
X
X
X
f
f
f
f
17
23
EB
LEM
X
X
X
f
f
f
f
18
24
CN
CAN
X
X
f
f
f
f
f
19
25
EM
S1
X
X
f
f
f
f
f
1A
26
SB
EOF
X
X
f
f
f
f
f
1B
27
EC
ESC
X
X
f
f
f
f
f
1C
28
→
S4
f
f
f
f
f
f
f
1D
29
←
S5
f
f
f
f
f
f
f
1E
30
↑
S6
f
f
f
f
f
f
f
1F
31
↓
S7
f
f
f
f
f
f
f
Note 1. Only port 1 can be assigned to TERM.
2. The SCRN outputs all codes from Port 2 except &H16 (cursor ON) and &H17 (cursor OFF).
Содержание C500-ASC04
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