/******************************************************************//* bus.h - v0.00                                                  *//* Copyright (c) 1997 Texas Instruments Incorporated              *//******************************************************************//******************************************************************//* This header files defines the data structures and macros to    *//* access the Software Wait State and Bank Switch Control Regs    *//* and their bits/fields.                                         *//******************************************************************/#include "regs.h"/******************************************************************//* BNKCMP_MASK(val) - creates mask to set bank size of ext mem    *//*  val   - bank size of external memory (4,8,32,64)              *//******************************************************************/#define BNKCMP_MASK(val)\       (0x0010u - (val/0x4u))/******************************************************************//* BSCR_MASK(bnkcmp, psds, bh, exio) - set bank switch ctrl reg   *//*  bnkcmp  - size of external memory banks (4 - 64)              *//*  psds    - flag, equal 1 if extra cycle for back-to-back       *//*            program-data or data-program memory reads           *//*  bh      - flag, equal 1 if data bus holder is active , holds  *//*            data bus , D(15-0) at previous logic level          *//*  exio    - flag, equal 1 if external-bus-off function is       *//*            enabled. (normally set to 0)                        *//******************************************************************/#define BSCR_MASK(bnkcmp, psds, bh, exio)\	((MASK_FIELD(BNKCMP,BNKCMP_MASK(bnkcmp), BNKCMP_SZ)) &\	 (psds ? (MASK_BIT(PSDS) | MASK_TARGET_WORD) : ~MASK_BIT(PSDS)) &\	 (bh   ? (MASK_BIT(BH)   | MASK_TARGET_WORD) : ~MASK_BIT(BH))   &\	 (exio))/******************************************************************//* CLEAR_WAIT_STATES - clears all software wait states            *//*   addr - address of software wait state register               *//******************************************************************/#define CLEAR_WAIT_STATES\	SWWSR &= ~MASK_TARGET_WORD/******************************************************************//* SET_WAIT_STATES(ctrl) - set software wait states               *//*	addr  - address of software wait state register           *//*      ctrl  - mask to use in setting wait state register        *//******************************************************************/#define SET_WAIT_STATES(ctrl)\	SWWSR |= ctrl/******************************************************************//* SET_BUS_CTRL(ctrl) - sets bus control register                 *//*	ctrl - mask to use in setting register value              *//******************************************************************/#define SET_BUS_CTRL(ctrl)\	BSCR |= ctrl