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Dallas contiguous mode : two doubts

Hi,

I have the following two doubts:

1)
When should I use Dallas contiguous mode:512k vs Dallas contiguous mode: 16M ?
512k is enough for me but I do not know if I get some advantages with 16M mode!?

2)
How to locate all functions in a file to a specific location: example 102H?
filename: ulm.c

Thanks
joao

Parents
  • Probably you are wright regarding speed but size is not very clear to me since 19 and 24 bit both use 3 byte pointers!

    Wrong.

    The size of an AJMP instruction on the Dallas 390/400/5240 is 3 bytes and the size of the LJMP instruction is 4 bytes.

    The AJMP instruction has a 19-bit address. 3 of those bits are encoded in the opcode. Ergo, there are 8 AJMP instructions.

    Jon

Reply
  • Probably you are wright regarding speed but size is not very clear to me since 19 and 24 bit both use 3 byte pointers!

    Wrong.

    The size of an AJMP instruction on the Dallas 390/400/5240 is 3 bytes and the size of the LJMP instruction is 4 bytes.

    The AJMP instruction has a 19-bit address. 3 of those bits are encoded in the opcode. Ergo, there are 8 AJMP instructions.

    Jon

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