Chapter 2
Startup and Shutdown
2-3
Card Control Read Register (byte :080Ch)
Important: This is a read-only register.
Bit
Status Code Meaning
7
state of LED
1 = on
0 = off
6
color of LED
1 = red
0 = green
5
blink state of LED
1 = blink
0 = no blink
4
reserved
3
baud rate
00 = 230.4K baud
01 57 6K baud
2
01 = 57.6K baud
10 = 115.2K baud
11 = 230.4K baud
1
1 = puts the KT
x
into E/ISA 16bit mode; will not work
with 8bit devices in the same 128K block of memory
0 = extended 16bit mode; can mix 8 and 16bit devices;
0 is the default.
0
1 = E/ISAlevel interrupts
0 = edgetriggered interrupts; 0 is the default.
When you cold boot the host PC, you also restart the KTx card and place it
in a reset state. At this point, the KTx card is ready for your driver to start
the power-on self-diagnostic tests before loading the protocol binary file to
the KTx card.
Important: Since the self-diagnostic tests execute from the dual port,
you must run the dual-port functionality test before you run any of the
self-diagnostic tests.
Dualport Functionality Test
To check the functionality of the dual-port interface, follow these steps:
1.
Clear the dual-port memory by writing 00h to dual-port locations
:0000h through :07FFh.
Read and check :0000h through :07FFh for compliance.
Running Diagnostics
on the KT
x
Card
