call    vxWaitVsync
    ld  a, $2A
    call    vxSpiCmd
    ld  a, $0
    call    vxSpiParam
    ld  a, $0
    call    vxSpiParam
    ld  a, $01
    call    vxSpiParam
    ld  a, $3F
    call    vxSpiParam
    call    vxWaitVsync




vxWaitVsync:
; wait until the LCD finish displaying the frame
    ld  hl, VX_LCD_ICR
    set 2, (hl)
    ld  l, VX_LCD_ISR&$FF
vxWaitSyncLoop:
    bit 2, (hl)
    jr  z, vxWaitSyncLoop
    ret
vxSpiParam:
 scf ; First bit is set for data
 .db 030h ; jr nc,? ; skips over one byte
vxSpiCmd:
 or a,a ; First bit is clear for commands
 ld hl,0F80818h
 call vxSpiWrite
 ld l,h
 ld (hl),001h
vxSpiWait:
 ld l,00Dh
vxSpiWait1:
 ld a,(hl)
 and a,0F0h
 jr nz,vxSpiWait1
 dec l
vxSpiWait2:
 bit 2,(hl)
 jr nz,vxSpiWait2
 ld l,h
 ld (hl),a
 ret
vxSpiWrite:
 ld b,3
vxSpiWriteLoop:
 rla
 rla
 rla
 ld (hl),a ; send 3 bits
 djnz vxSpiWriteLoop
 ret