;›; common rtn for read, write›;›  .globl  __rwsetup›__rwsetup:›  ldy  #4›  jsr  ldaxysp    ; get iocb›  sta  tmp3    ; save it›  ldy  #0›  jsr  ldaxysp    ; get size›  php      ; save cond codes, for zero-ness›  stx  tmp2›  ldx  tmp3    ; iocb›  sta  icbll,x›  lda  tmp2    ; size hi›  sta  icblh,x›  ldy  #2    ; get buf addr›  jsr  ldaxysp›  stx  tmp2›  ldx  tmp3›  sta  icbal,x›  lda  tmp2›  sta  icbah,x›  jsr  incsp6    ; pop args›  plp›  rts›;›