ColdFire 5307 start up problem using CS1 with byte access

Hello,

I'm using Motorola MCF5307 with SwiftX ColdFire 2.04.5

instead of dynamic ram with CS1 I am using static ram,
everything was fine ( for last 4 years) when ram chip was 16 bit with
no byte access

now I have new CPU board with 16 bit ram which has two pins for byte access,
BE0 96/5307 is connected to BHE# of ram
BE1 98/5307 is connected to BLE# of ram

in start.f I changed
$1DC0 # D0 MOV D0 CSCR1 A0) W. MOV \ no byte access
to
$1DF8 # D0 MOV D0 CSCR1 A0) W. MOV \ with byte access

and ColdFire does not start, unless I put the two ram pins to GND
for initial start up defined in start.f
and then I allow connection ( mentioned above) just before my software starts
to run - in this case everything is ok, I have both 16bit & 8bit access

I am not sure at this moment if this is software or hardware issue.

Service request to Motorola ( Freescale) did not help

Did anybody encounter that problem ?

Thanks

Jacek Myzyk

Gem Systems Inc.

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Received on Thu Oct 14 2004 - 13:22:49 PDT