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-
- 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
-