Motorola DSP56303 User Manual page 251

bra
HC11HOSTLD
movep
bra
I8051HOSTLD
movep
bra
MC68302HOSTLD
movep
;
; HA8EN
;
; HGEN
<HI08CONT
#%0000001000011000,x:M_HPCR
; Configure the following conditions:
; HAP = 0 Negative host acknowledge
; HRP = 0 Negative host request
; HCSP = 0 Negative chip select input
; HD/HS = 0 Single strobe bus (R/W~ and DS strobes)
; HMUX = 0 Non multiplexed bus
; HASP = 0 (address strobe polarity has no meaning in
; non-multiplexed bus)
; HDSP = 1 Positive data strobes polarity
; HROD = 0 Host request is active when enabled
; spare = 0 This bit should be set to 0 for future
; compatibility
; HEN = 0 When the HPCR register is modified HEN should be
; cleared
; HAEN = 0 Host acknowledge is disabled
; HREN = 1 Host requests are enabled
; HCSEN = 1 Host chip select input enabled
; HA9EN = 0 (address 9 enable bit has no meaning in
; non-multiplexed bus)
; HA8EN = 0 (address 8 enable bit has no meaning in
; non-multiplexed bus)
; HGEN = 0 Host GPIO pins are disabled
<HI08CONT
#%0001110000011110,x:M_HPCR
; Configure the following conditions:
; HAP = 0 Negative host acknowledge
; HRP = 0 Negative host request
; HCSP = 0 Negative chip select input
; HD/HS = 1 Dual strobes bus (RD and WR strobes)
; HMUX = 1 Multiplexed bus
; HASP = 1 Positive address strobe polarity
; HDSP = 0 Negative data strobes polarity
; HROD = 0 Host request is active when enabled
; spare = 0 This bit should be set to 0 for future
; compatibility
; HEN = 0 When the HPCR register is modified HEN
; should be cleared
; HAEN = 0 Host acknowledge is disabled
; HREN = 1 Host requests are enabled
; HCSEN = 1 Host chip select input enabled
; HA9EN = 1 Enable address 9 input
; HA8EN = 1 Enable address 8 input
; HGEN = 0 Host GPIO pins are disabled
<HI08CONT
#%0000000000111000,x:M_HPCR
; Configure the following conditions:
; HAP = 0 Negative host acknowledge
Bootstrap Program
non-multiplexed bus)
= 0 (address 8 enable bit has no meaning in
non-multiplexed bus)
= 0 Host GPIO pins are disabled
Bootstrap Code
A-5