Dsp 56301 Expansion Port Memory Map - Lexicon 960L Service Manual

Upon receipt of this program the 56301 initializes the three T-MIX devices and loads a program into the Z-
80 dual port RAMs. The 56301 releases the Lexichips and Z-80s from the reset state by driving the
DBRD_RSTn/ signals high and the Z80_INITn/ signals high. At this point the Z-80s execute their startup
code from the dual port RAMs and pass messages back to the 56301 using the DB_MAS_INTn/ interrupt
signals and the dual port RAM interrupt vector locations. The Z-80s will illuminate the Z-80 LEDs under
software control to indicate their startup success or failure. The 56301 then receives commands from the
host to detect which cards are resident on the 960L I/O bus. After reporting this information to the host
processor through the PCI bus the 56301 is commanded by the host to initialize the cards resident on the
960L I/O bus.

DSP 56301 Expansion Port Memory Map

Address Attribute
Number
-
AA1
AA1
AA1
AA1
AA1
AA1
AA1
AA1
AA1
AA1
AA1
AA1
AA1
AA1
AA1
AA1
AA1
AA2
AA2
AA2
AA2
AA2
AA2
AA2
AA0
AA0
AA0
AA0
AA0
AA0
AA0
Z80 Memory Map
Address
$FF0000 - $FFFFFF
$D00400 - $FEFFFF
$D00000 - $D003FF
$9D8000 - $CFFFFF
$9D4002 - $9D7FFF
$9D4001
$9D4000
$9D3002 - $9D3FFF
$9D3001
$9D3000
$9D2002 - $9D2FFF
$9D2001
$9D2000
$9D1800 - $9D1FFF
$9D1000 - $9D17FF
$9D0800 - $9D0FFF
$9D0000 - $9D07FF
$9C0001 - $9CFFFF
$840000 - $9BFFFF
$83C400 - $83FFFF
$83C000 - $83C3FF
$83A400 - $83BFFF
$83A000 - $83A3FF
$838400 - $839FFF
$838000 - $8383FF
$800000 - $837FFF
$308000 - $7FFFFF
$301A00 - $307FFF
$301800 - $3019FF
$301600 - $3017FF
$301400 - $3015FF
$301200 - $3013FF
$301000 - $3011FF
$300000 - $300FFF
$010000 - $2FFFFF
$0 - $00FFFF
Resource
Internal Decodes
-
Boot PROM
-
-
T-mix #3 Control Data Port
T-mix #3 Control Pointer Port
-
T-mix #2 Control Data Port
T-mix #2 Control Pointer Port
-
T-mix #1 Control Data Port
T-mix #1 Control Pointer Port
-
Dual Port SRAM #2
-
Dual Port SRAM #1
-
-
-
T-mix #1 DSP Port
-
T-mix #2 DSP Port
-
T-mix #3 DSP Port
-
-
-
IOBUS SLOT #5-
IOBUS SLOT #4
IOBUS SLOT #3
IOBUS SLOT #2
IOBUS SLOT #1-
-
-
Internal Decodes
Lexicon
7-37