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    Chuck(G)

    This is a very common problem for any device...

    This is a very common problem for any device using DMA--that is, crossing a "physical" 64K boundary.

    The usual procedure is to allocate (INT 21H/ AH=48H) twice as much as you need, located the 64K...

    Chuck(G) Today, 09:21 AM Go to last post
    thunter0512

    Thanks Doug! The direct connection of the...

    Thanks Doug!

    The direct connection of the LOAD_DAR_H from the SBC6120 to the latch on the IOB6120 has eliminated the problem completely. No pull-down resistor required. Just for fun I will try the...

    thunter0512 Today, 09:14 AM Go to last post
    Mills32

    Thanks. Im creating a reduced version of the...

    Thanks. Im creating a reduced version of the player to post here, I now load a "big" 64K sound, to test when it starts to fail.

    I'm declaring "global _sound_data" in assembly so that C code can...

    Mills32 Today, 09:11 AM Go to last post
    Slob

    It's one heck of a lot easier to get a reader...

    It's one heck of a lot easier to get a reader than a punch. I've built them from total scratch as well as by hacking old industrial equipment.
    What I have found is that GOOD Mylar tape is almost...

    Slob Today, 08:52 AM Go to last post
    daver2

    I have gone back through the previous posts and I...

    I have gone back through the previous posts and I am not convinced that the sound card (or its driver) would require the buffer to START on a 64K boundary (a page as you call it).

    A segment (a...

    daver2 Today, 08:43 AM Go to last post