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The Pier Shareware 3
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The Pier Shareware Number 3 (The Pier Exchange) (1993).iso
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010
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spkt460s.exe
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HYPERUPS.TXT
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1992-11-15
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3KB
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95 lines
Uninterruptable Power Supply (UPS) Monitoring function allows HyperDisk
to change to a safe caching mode should the UPS become active. If the
power is restored the original caching mode will be restored. Any I/O
port may be monitored for active signals. The polarity of the signals
may be inverted. Multiple signals may be selected using the IoMask
value.
command format:
UP:{IoPort}:{IoPolarity}:{IoMask}:{CacheMask}[:{PollSeconds}[:{PollCount}]]
Items in {} are required, item in [] optional.
IoPort: Input port address (Hex); Hex indicates hexidecimal numeric format
IoPolarity: Inverts sense of input port bits (Hex.)
0 does not change value, 1 inverts bits sense
IoMask: Determines which bits to test for non-zero condition (Hex.)
0 drops bit from test, 1 retains IoPort bit value.
Non-Zero results indicates active UPS (AC power off)
Zero results indicates inactive UPS (AC power on)
CacheMask: is a bit field, 1 disables, 0 no change
Bit.....BitName: A one (1) will disable the corresponding function
0..StagedFloppy: Stage Write floppy drive write operations
1....StagedHard: Stage Write hard drive write operations
2..VerifyFloppy: Verify floppy drive write operations
3....VerifyHard: Verify hard drive write operations
4.....Reserved0: Reserved always 0
5.....Reserved1: Reserved always 0
6..FloppyEnable: Enable floppy caching
7..CacheEnabled: Enable all caching functions
PollSeconds: Sets the period in seconds to sample IoPort value
PollCount: Sets the number of identical IoPort samples before changeing
the cache state.
--- --- --- --- --- --- --- --- --- --- ---
IoMask Values for COM port based UPS monitoring system:
Computer Serial Interface Modem Status Register(+6),
COM1 base address 3F8+61=3FE, COM2 base address 2F8+6 =2FE
9-Pin Port 25-Pin Port Signal Name IoMask (Hex) IoPolarity (Hex)
Pin 1 Pin-8 Carrier Detect 80 00
Pin 6 Pin-6 Data Set Ready 20 00
Pin 8 Pin-5 Clear To Send 10 00
Pin 9 Pin-22 Ring Indicator 40 00
--- --- --- --- --- --- --- --- --- --- ---
To make your own cable for the American Power Conversion (APC) UPS follow the
pin-out details below:
APC 9 pin interface Computer 9 pin interface
Cable end: Male (Pins) Cable end: Female (Sockets)
Pin 2 - AC Power Fault------------------Pin 1 - Modem Data Carrier Detect
Pin 4 - Signal Ground-------------------Pin 5 - Signal Ground
Example setup:
Monitor COM2, Modem Status port: Bit 7, Carrier Detect, normal polarity
If power fails disable Staged Writes on both hard and floppy drives
30 second sample period, 3 matching samples indicates active/inactive UPS
corresponding HyperDisk command line:
hyperdk up:2FE:0:80:3:30:3