Nortel Networks Video Gaming Accessories 553-3001-211 Manual De Usuario

 NT6D80 MSDL card

that support the same functions. For example, three cards supported with the 
MSDL (NT6D80) are QPC757 (DCHI), QPC513 (ESDI), QPC841 (SDI) and 
NTSD12 (DDP).

Though the MSDL is designed to coexist with other cards, the number of 
ports supported by a system equipped with MSDL cards is potentially four 
times greater than when using other cards. Since each MSDL has four ports, 
representing a single device, a system can support as many as 16 MSDL cards 
with a maximum of 64 ports.

The MSDL card is a standard size circuit card that occupies one network card 
slot and plugs into the module’s backplane connector to interface with the 
CPU bus and to connect to the module’s power supply. On the faceplate, the 
MSDL provides five connectors, four to connect to I/O operations and one to 
connect to a monitor device that monitors MSDL functions. Figure 79 on 

 illustrates major MSDL components and their locations on the 

printed circuit card.

Note:  Switches S9 and S10 are configured to reflect the device number 
set in LD 17 (DNUM). S10 designates tens, and S9 designates ones. For 
example, set device number 14 with S10 at 1 and S9 at 4.