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| Subject: | [ts-7000] Re: PC/104 16 Bit Acccess |
| From: | "Jesse Off" <> |
| Date: | Sun, 05 Mar 2006 17:08:57 -0000 |
> Since only the BHE line was pulled onto the bus, I was wondering
what happens to the A0
> (Address Line 0) line during word accesses?
On 8-bit accesses to the 16-bit IO space (0x21e00000), A0 is valid.
e.g. If you do a byte read at 0x21e00101, a0 will be high and the CPU
will expect the return byte on the upper 8 data lines.
//Jesse Off
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