TX7410 Operation Manual
43
{ union REGS r;
r.x.dx = port; /* serial port */
r.h.ah = 0; /* int14 function0:initial serial port */
r.h.al = code; /* initialization code */
int86( 0x14,&r,&r );
}
5.2 GPIB Interface Introduction
5.2.1 GPIB connection
When configuring a GPIB system, the following restrictions must be adhered to.
The total length of cable in one bus system must be less than or equal to two meters
times the number of devices connected on the bus (the GPIB controller counts as one
device) and the total length of cable must not exceed 20 meters.
A maximum of 15 devices can be connected on one bus system.
There are no restrictions on how the cables are connected together. However, it is
recommended that no more than four piggyback connectors be stacked together on
any one device. The resulting structure could exert enough force on the connector
mounting to damage it.
Figure 5-1 GPIB connection
