Appendix2. The diffrence between DPCS and DPCS Emulator
41
Appendix 2. Differences between DPCS and
DPCS Emulator
This appendix describes the difference between DPCS and DPCS Emulator. Please read this notes carefully
before designing a renewal system.
Differences and Notes
Table A2.1 List of the difference (1)
Hardware and Performance
Item DPCS DPCE Emulator Notes
CPU i8085/5MHz x Control
card
Celeron 500MHz Application performance and execution
period are almost the same as original
DPCS. As DPCS Emulator emulates all
control card programs on single CPU,
the total time of all control card
programs execution must be in the
Control Period.
Floating point
arithmetic
Software Emulation
VLCPXn
Arithmetic Processor
- 8232
VACPX2, VPCPX2
- 9511A
VACPX2B,
VPCPX2B
Coprocessor (built-in
CPU)
Equivalent for 80387
9511A(VACPX2B, VPCPX2B) uses
different floating pint data format. The
results of calculation can be different.
Input data/parameter of inappropriate
data type in a function block might
produce unexpected results. In such
cases, the output of DPCS and DPCS
emulator can be different.
Calculation
accuracy
IEEE single precision
floating point. (Except
VACPX2B,
VPCPX2B)
IEEE single precision
floating point
Equivalent
To Next Page
Loading...
Need help?
General
