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Old 01 January 2017, 10:34   #20
plasmab
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Location: Glasgow
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Quote:
Originally Posted by Pat the Cat View Post
This any use? Original 1988 datasheet on the 68882.

Probably already got, if you've got that far.

http://www.rlocman.ru/i/File/dat/Fre...68882EI16A.pdf

Figure 11, page 14 has some diagrams explaining.

EDIT EDIT: Weird, need +5V on A0 of the 68882... would never have guessed that.
Thats what i used for reference and thats how I wired it.

VCC to A0 and SIZ. 32 Bit bus wired and DSACK0/DSACK1 wired to the 030. Not much to go wrong here from what i can tell.

If i get nowhere i'll drop the FPU into memory space and poke at it from there. (One of the amazing things about the CPLD setup i have)

Last edited by plasmab; 01 January 2017 at 10:42.
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