KYBD, Logical Device 7
Table 72 - KYBD, Logical Device 7 [Logical Device Number = 0x07]
NAME
REG INDEX
DEFINITION
STATE
KRST_GA20
0xF0
KRESET and GateA20 Select
R/W
Bit[7] Polarity Select for P12
= 0 P12 active low (default)
= 1 P12 active high
Default = 0x00
on Vcc POR or
Reset_Drv
Bits[6:3] Reserved
Bit[2] Port 92 Select
= 0 Port 92 Disabled
= 1 Port 92 Enabled
Bit[1] GATEA20 Select
= 0 Software Control
= 1 Hardware Speed-up
Bit[0] KRESET Select
= 0 Software Control
= 1 Hardware Speed-up
0xF1 -
0xFF
Reserved - read as ‘0’
180