K.1 - Math Coprocessor Installation

Transcription

1 K.1 - Math Coprocessor Installation The math coprocessor can be added to 80C186 CPU ( or PiC90) or 80C186EC (PiC9XX) modules to support additional arithmetic, logarithmic, exponential, trigonometric, and floating point mathematical operations. You will be installing the math coprocessor in one of three ways depending on which of the following you have: 1. A CPU module 2. A PiC9XX CPU module 3. A PiC90 CSM/CPU module The procedure covers installing the coprocessor directly on the CPU, PiC9XX CPU, or the PiC90 CSM/CPU module. IMPORTANT With a, the math coprocessor works on the version of the CPU module which has a factory installed oscillator on it. (See Figure K-1 for its location.) Some earlier versions do not have this oscillator. If your CPU does not have an oscillator installed, return it to the factory for an upgrade before installing the math coprocessor K.1-1

2 1. Procedure for installing the math coprocessor on the CPU or CSM/CPU module 1. Follow standard precautions before handling any electronics components. Lay the module on a static-free surface, label side up. Ground yourself using a properly grounded wrist strap before you open the module. 2. Press the plastic tabs at the top and bottom of the module toward each other and lift off the module cover. 3. The math coprocessor should be positioned in the module according to the illustration in Figure K-1 for a, in Figure K-2 for a PiC9XX, or in Figure K-3 for a PiC90. The math coprocessor is shipped in a socket for easy installation. The math coprocessor, the socket, and the module socket are each notched. All notches should be on the same end. NOTE: With the, the math coprocessor has 40 pins and the module socket has 48 pinholes. Line pins up beginning on the notched end of the module socket and press in place. When the math coprocessor is inserted, there should be eight empty pinholes on the unnotched end of the module socket as shown in the enlarged area of Figure K-1. K

3 Figure K-1. Installing the Math Coprocessor on the CPU CPU module (cover removed) LAD MEM HI LAD MEM LO EXP DATA HI EXP DATA LO DATA HI DATA LO 64K 256K EPROM RAM LAD MEM SEL EXEC MEM HI EXEC MEM LO 48 Pin Socket for Math Coprocesseor (or socket for daughter board connector) Factory installed Oscillator 40 Pin Math Coprocessor Match notches and line pins up, starting at notched edge. Enlarged view of math coprocessor inserted into CPU socket Eight empty pinholes on unnotched end of CPU socket AA Check the following: IMPORTANT The math coprocessor is oriented correctly with all notches on the same end. The pins are inserted from the notched end leaving eight empty pinholes on the unnotched end on the CPU. If the math coprocessor is installed backwards or in the wrong pinholes, it may be damaged or destroyed when power is turned on to the system K.1-3

4 Figure K-2. Installing the Math Coprocessor on the PiC9XX CPU Match notches Socket for Math Coprocessor Math Coprocessor SYSTEM RAM HI SYSTEM RAM LOW DIAG LED Configure LED RAM DISK HI RAM DISK LOW APPLICATION MEMORY LOW APPLICATION MEMORY HI Communication LEDs RAM EPROM RAM DISK RM EP APPLICATION MEMORY Communication Port PiCPro Port User Port Fiber Optic Connections K

5 Figure K-3. Installing the Math Coprocessor on the PiC90 CSM/CPU Match notches Power Supply DIAG LED PWR LED SCAN LED BATT LED Key Ladder memory BATTERY - + Battery Math coprocessor socket 4. Replace the module cover. Insert the module in the rack. Turn the key switch to Stop. Turn on power. Using PiCPro, download application module (see Software Manual) and turn key switch to Run. CAUTION Follow the power on sequence as defined above. If not followed, the may malfunction K.1-5

6 NOTES K