STATUS PORT
The status port is interrogated by version 2.0 (or later) HDOS as well as by Heath CP/M.
This can be used to determine the system configuration upon bootup without requiring
any user interaction. Some user programs may also interrogate the status port.
Refer to Pictorial 2-2 for the following steps.
NOTE: The sections of switch SWl are grouped as shown by the letters on the Pictorial.
These groups are defined as follows:
______
SWl
PICTORIAL 2-2
SWITCH SETTING DESCRIPTION
00* Port 174(7CH)/177Q(7FH) has an H17 type disk (normal)
01
Port 174/177Q has an H47 type disk
10
Undefined
. 11
Undefined
00** Port 170(78H)/l73Q(7BH) is not in use (normal without H47)
01
Port 170/173Q has an H47 (normal with H47)
10
Undefined
11
Undefined
( 0
Boots from device at port 174/177Q (H17, normal)
I 1
Boots from device at port 170/173Q (H47)
1
0
Performs memory test upon boot up (not currently supported)
1
Does not perform memory test (normal)
I 0
Sets Console to 9600 baud (normal)
| 1
Sets Console to 19,200 baud (not currently supported)
(
0 Normal boot (normal)
1 Auto boot on power up or reset (not recommended)
NOTE: Press either the GO key or the 1 key on the Computer’s front panel to boot from the
drive indicated by the setting of switch section 4 (the primary boot device). Press the 2
key to boot from the device that is not selected by switch section 4 (the secondary boot
device).
•Right column is switch 0.
••Right column is switch 2.
