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I've got an 8-bit Ether3, so I've discovered that the address mapping is 

non-linear.  Comment it here so I don't forget.
This commit is contained in:
bjh21 2001-06-15 00:28:01 +00:00
parent 5dc1e8334c
commit ddc6e8e6ad
1 changed files with 12 additions and 1 deletions
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13
sys/dev/podulebus/if_eareg.h
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@ -1,4 +1,4 @@
/* $NetBSD: if_eareg.h,v 1.2 2001/03/25 01:08:56 bjh21 Exp $ */
/* $NetBSD: if_eareg.h,v 1.3 2001/06/15 00:28:01 bjh21 Exp $ */
/*
* Copyright (c) 1995 Mark Brinicombe
@ -39,6 +39,17 @@
* Atomwide Ether3 Register Definitions
*/
/*
* The 8005 (or 80C04 or 80C04A) in an Ether3 is wired up as follows:
* A0 -- LA[2]
* A1 -- LA[6]
* A2 -- LA[7]
* A3 -- LA[8]
*
* Happily, we can ignore A0 in 16-bit mode, but it'll come back to bite
* us on 8-bit versions.
*/
#define EA_8005_BASE 0x000
#define EA_8005_SHIFT 5