Freescale Semiconductor DSP56366 - Manual (Page 260)

DSP56366 Bootstrap Program
DSP56366 24-Bit Digital Signal Processor User Manual, Rev. 4
A-8 Freescale Semiconductor
; future compatability
; 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 non-multiplexed bus)
; HGEN = 0 Host GPIO pins are disabled
bra <HDI08CONT
HC11HOSTLD
movep #%0000001000011000,x:M_HPCR
; Configure the following conditions:
; HAP = 0 Negative host acknowledge
; HRP = 0 Negative host request
; HCSP = 0 Negatice chip select input
; HDDS = 0 Single strobe bus (R/W~ and DS)
; HMUX = 0 Non multiplexed bus
; HASP = 0 (address strobe polarity has no
; meaning in non-multiplexed bus)
; HDSP = 1 Negative data stobes polarity
; HROD = 0 Host request is active when enabled
; spare = 0 This bit should be set to 0 for
; future compatability
; 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
bra <HDI08CONT
I8051HOSTLD
movep #%0001110000011110,x:M_HPCR
; Configure the following conditions:
; HAP = 0 Negative host acknowledge
; HRP = 0 Negatice host request
; HCSP = 0 Negatice chip select input
; HDDS = 1 Dual strobes bus (RD and WR)
; HMUX = 1 Multiplexed bus
; HASP = 1 Positive address strobe polarity
; HDSP = 0 Negative data stobes polarity