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Appendix
COM-2(PC)F64
D. Difference Between the COM-2(PC)F
and COM-2(PC)V
The COM-2(PC)F is an upgrade of the previous COM-2(PC)V
board and is upwardly compatible. Therefore, the board can
generally be used in the same way as the COM-2(PC)V.
However, as the bus specification has changed from the XT bus to
the AT bus and the board sizes are different, the COM-2(PC)F may
not fit in some PCs. Check the size of board that can be mounted
in your PC before selecting the COM-2(PC)F. The two boards
also differ in their specifications and hardware setup. The
differences are described below.
Table 6.10. Specifications Differences
COM-2(PC)V COM-2(PC)F
Bus XT Bus AT Bus
Baud Rate 50~38,400bps 50~115,200bps
Interrupt Level IRQ3~7, 9 IRQ3~7, 9~12, 14, 15
(Jumper Selectable) (Jumper Selectable)
Dimensions 120.0 x 107.0 x 18.5mm 160.0 x 107.0 x 18.5mm
JP1~JP3
COM-2(PC)V
JP1~JP3
COM-2(PC)F
Interrupt
setting
(Jumper Selectable)
(Jumper Selectable)
NC9 3 4 5
6
7 10 11121415
NC
4 5 6
7
2 3
Figure 6.15. Difference in Jumpers (JP1~JP3)