Technical information

CSI to SPI Peripheral Communication in V850ES Microcontrollers

#----------------------------------------------------------------------------

# RESET handler

#----------------------------------------------------------------------------

.section "RESET", text

jr __start

#----------------------------------------------------------------------------

# start up

# pointers: tp - text pointer

# gp - global pointer

# sp - stack pointer

# ep - element pointer

# exit status is set to r10

#----------------------------------------------------------------------------

.text

.align 4

.globl __start

.globl __exit

.globl __startend

.extern ___PROLOG_TABLE

__start:

mov #__tp_TEXT, tp -- set tp register

mov #__gp_DATA, gp -- set gp register offset

add tp, gp -- set gp register

mov #__stack+STACKSIZE, sp -- set sp register

mov #__ep_DATA, ep -- set ep register

.option warning

mov 1, r11 -- on-chip debug mode

set1 5, PMC0[r0]

set1 5, P0[r0]

st.b r11, PRCMD[r0]

st.b r11, OCDM[r0]

nop

mov 0x1, r11

st.b r11, VSWC[r0] --mainclock over 16.6MHz

jarl _Clock_Init, lp -- call Clock_Init function

mov #__ssbss, r13 -- clear sbss section

mov #__esbss, r12

cmp r12, r13

jnl .L11

.L12: