minimigtg68 : Message: [minimigtg68] TG68

minimigtg68 · Minimig with fpgacpu tg68

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Message #181 of 321 |

[minimigtg68] TG68 - bugs???

Hi Tobias,

2) I *think* I've found an execution bug.

move.w #$1234, d0
move.l #$0810, a0
move.w d0,(a0)

...works correctly. It writes $1234 to address $0810. However...

move.l #$0810, a0
move.w #$1234, d0
move.w d0,(a0)

...doesn't work. It outputs #$1234 on *both* address and data_out buses!

Regards,

--
| Mark McDougall | "Electrical Engineers do it
| <http://members.iinet.net.au/~msmcdoug> | with less resistance!"

Tue Dec 2, 2008 3:59 am

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Mark McDougall <msmcdoug@...>

tcdevelop

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Message #181 of 321 |

Expand Messages	Author	Sort by Date
Hi Tobias, OK, I've started a new thread because I think I know a little more about what is going on. I still reserve the right to a big "DOH" if you point out...	Mark McDougall tcdevelop	Dec 2, 2008 3:57 am
Hi Tobias, 2) I think I've found an execution bug. move.w #$1234, d0 move.l #$0810, a0 move.w d0,(a0) ...works correctly. It writes $1234 to address $0810....	Mark McDougall tcdevelop	Dec 2, 2008 3:59 am
... *SIGH* Sorry Tobias, a false alarm. Should've checked the timing report!!!! All looks OK... Regards, --...	Mark McDougall tcdevelop	Dec 2, 2008 7:00 am
You seem to be crying wolf a lot, why not keep your errors to yourself untill you are !00% sure ________________________________ From: Mark McDougall...	Gary Hoyles dimlow_uk	Dec 2, 2008 8:51 am
... It may seem that way, but since I've been working on it pretty much full time for the last 24 hours, I did actually get to the point where, after a few...	Mark McDougall tcdevelop	Dec 2, 2008 9:03 am
Hi Mark, I'm glad that you work with the TG68 Core and that the bug was a false alarm. Regards, TobiFlex ... yourself ... much full ... after a ... _was_...	TobiFlex tobiflexx	Dec 2, 2008 7:14 pm

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