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Hardware I.P.B. 4043 4th October 1990 (NT)
Department Category Implementation
Hardware Hardware Advisory
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Qi 600 Maths CoProcessor-Enabling PALs

Please be advised that, since the introduction of VX FT, two PALs are now required to enable use of the maths co-processor on early Qi 600 motherboards.

The PALs are identified as follows :-

Location PAL Marking Part Number
IC 153 N387153VB 12156131
IC 29 N387029VF 12164031

This is particularly important if motherboards fitted with existing co-processors are exchanged for any reason. Any new replacement motherboards will require the above PALs to be fitted before the co-processor will work.

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Computing for a Connected World