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My BASIC Notes
Partition Information
for CMD Compatible Devices
Command: PRINT#lf, "G-P" [+CHR$(n)]
To get the current partition information then leave '+CHR$(n)'
out or enter 255 at n.
To get the system partition information then enter 0 at n (CMD
FD only).
Enter partition number in n to get its information.
Information returned will come through the Error channel as:
|
BYTE
|
CONTENTS
|
DESCRIPTION
|
|
0
|
Partition Type |
0 - not created
1 - Native Mode
2 - 1541 Emulation Mode
3 - 1571 Emulation Mode
4 - 1581 Emulation Mode
5 - 1581 CP/M Emulation Mode
6 - Print Buffer
7 - Foreign Made (Direct Access)
255 - System
|
|
1
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Disk info:
(Only for CMD FD drives, partition 0)
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Bit 7 = Disk in drive (1 = yes)
Bit 6 = Formatted disk (1 = yes)
Bit 5 = Valid format (1= CMD/CBM)
Bit 4 = True 1581 disk (1 = yes
Bit 3-0 = Format Type:
|
Bit 3
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Bit 2
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Bit 1
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Bit 0
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Format
|
|
0
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0
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0
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0
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Unknown
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0
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0
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0
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1
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800K
|
|
0
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0
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1
|
0
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1.60Mb
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|
0
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1
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0
|
0
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3.20Mb
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|
0
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1
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0
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1
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720K IBM
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|
0
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1
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1
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0
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1.44Mb IBM
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|
0
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1
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1
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1
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2.88Mb IBM
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CMD HD and CMD RAMLink:-
CHR$(0)
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|
2
|
Partition number |
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3 - 18
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Partition name |
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19
|
Starting system address of partition (high byte) |
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20
|
Starting system address of partition (middle
byte) |
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21
|
Starting system address of partition (low byte) |
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22 - 26
|
CHR$(0) Reserved |
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27
|
Size of partition (high byte) |
|
28
|
Size of partition (middle byte) |
|
29
|
Size of partition (low byte) |
|
30
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CHR$(13) |
Important: To avoid problems with reading information
from Partition 13, the G-P command should always sent with a trailing
carriage return (CHR$(13)). The BASIC PRINT# statement will do
this for you automatically as long as you do not follow it with
a trailing semicolon (;).
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