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My BASIC Notes
Disk Access Commands
OPEN fn,dn,sn
Open a file channel to Tape: OPEN fn, dn, sn, "name"
Open a file channel to Disk Drive: OPEN fn, dn, sn,
"name, ft, di"
goto OPEN.
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COMMAND
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DESCRIPTION
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DETALES
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fn
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unique number for that file to use with INPUT#,
GET#, PRINT#. |
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dn
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the device number of the drive |
1= Tape deck
8 to 30 = Disk drives |
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sn
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secondary number |
0 = Tape read
1 = Tape write
2 = Tape write with End-of-tape marker
4 = Printer
5 to 14 = Is used for the Disk Drives
15 = Disc Drive error channel |
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"name"
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File Name. (16 charites Max) |
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ft
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File Type (Disk only) |
S = Sequential
P = Program
U = User
A = Append
L = Length (Relative file) |
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di
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Direction (Disk only) |
R = read
W = write
M = modify |
INPUT#fn,data
Retrieve a string data from file, goto INPUT#.
PRINT#fn,data
Write string data to file, goto PRINT#.
GET#fn,data
Reads data from the file one Byte at a time, goto GET#.
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