eficdbdm.pld

来自「WaitForSingleObject 摩托罗拉的68k源程序」· PLD 代码 · 共 82 行

Name       eficdbdm;
Partno     U;
Date       25.11.98;
Revision   0-1;
Designer   Gunter Magin;
Company    private;
Assembly   efi332icd;
Location   X;
Device     p22v10;
Format     j;

/* $Id: eficdbdm.pld,v 1.1 2003/06/04 01:31:32 ppisa Exp $ */
/*
 * $Log: eficdbdm.pld,v $
 * Revision 1.1  2003/06/04 01:31:32  ppisa
 * Import of m683xx specific vesion of BDM support
 *
 * Revision 1.2  1998/12/28 11:06:48  magin
 * no longer efi-aware test
 *
 * Revision 1.1  1998/12/27 22:50:43  magin
 * diag_led must be inverted, because we pretend an OC output
 *
 * Revision 1.0  1998/11/25 15:26:20  magin
 * Initial revision
 *
 */

/**  pin definitions   **/

PIN 1          = _not_used_01;
PIN 2          = dsi_pp;
PIN 3          = dsclk_pp;
PIN 4          = step_pp;
PIN 5          = reset_pp;
PIN 6          = oe_pp;
PIN 7          = led_pp;
PIN 8          = berr_in_pp;
PIN 9          = _not_used_09;
PIN 10         = _not_used_10;
PIN 11         = dso_bdm;
PIN 13         = freeze_bdm;


PIN 14         = freeze_led;
PIN 15         = diag_led;
PIN 16         = berr_bdm;
PIN 17         = dsclk_bdm;
PIN 18         = helper;
PIN 19         = _not_used_19;
PIN 20         = dsi_bdm;
PIN 21         = reset_bdm;
PIN 22         = dso_pp;
PIN 23         = freeze_pp;

/** Equations **/

berr_bdm.oe    =  berr_in_pp;
berr_bdm       = !berr_in_pp;

dsclk_bdm      =  step_pp & !freeze_bdm & !helper & reset_bdm #
                 dsclk_pp &  freeze_bdm &  helper & reset_bdm;

dsi_bdm.oe     = oe_pp & freeze_bdm;
dsi_bdm        = oe_pp & dsi_pp;

dso_pp         =  dso_bdm;
 
reset_bdm      =  reset_pp;
reset_bdm.oe   = !reset_pp;

freeze_pp      =  freeze_bdm;
freeze_led     =  !freeze_bdm;
freeze_led.oe  =  freeze_bdm;

diag_led       = !led_pp;
diag_led.oe    =  led_pp;

helper         =  freeze_bdm  &  helper #
                 !dsclk_pp      & freeze_bdm;