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by exxos
Thu Jan 23, 2020 8:30 pm
Forum: HARDWARE DISCUSSIONS
Topic: FU vs AA on the 68000 ?
Replies: 1
Views: 54

FU vs AA on the 68000 ?

I can't figure out what the "AA" part is in the part number such as here...

https://www.newark.com/nxp/mc68sec000aa ... =AFC-SF-FC

In the pdf's they list FU, but whats AA ?!

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by exxos
Thu Jan 23, 2020 4:07 pm
Forum: ST 16MHz V2.X SERIES BOOSTERS
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Replies: 514
Views: 60839

Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)

The good news is TOS206 is now working at 75Mhz. The bad news is.. this may need water cooling :lol: :roll:

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EDIT:

Now pushing ROM over its limits :lol:

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IMG_4842.JPG (100.47 KiB) Viewed 26 times
by exxos
Thu Jan 23, 2020 2:47 pm
Forum: ST 16MHz V2.X SERIES BOOSTERS
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Replies: 514
Views: 60839

Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)

IngoQ wrote:
Thu Jan 23, 2020 2:45 pm
Holy shit... This reminds me a little of the good old 486DX/4 days... only that yours would be a 68000DX10 by now ;)
:lol: Need to find a 80Mhz osc next :lol:
by exxos
Thu Jan 23, 2020 2:10 pm
Forum: CHAT FORUM
Topic: The puzzle why the booster stopped working for no reason
Replies: 9
Views: 82

Re: The puzzle why the booster stopped working for no reason

PhilC wrote:
Thu Jan 23, 2020 2:07 pm
I saw that but thought Nah, that a normal exxos circuit :lol:
:lolbig:
by exxos
Thu Jan 23, 2020 2:08 pm
Forum: ST 16MHz V2.X SERIES BOOSTERS
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Replies: 514
Views: 60839

Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)

TOS206 *almost* got there at 75Mhz that time... I simply added a 1.5K pull up on RESET... So at least its actually trying to boot now!

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by exxos
Thu Jan 23, 2020 2:02 pm
Forum: CHAT FORUM
Topic: The puzzle why the booster stopped working for no reason
Replies: 9
Views: 82

Re: The puzzle why the booster stopped working for no reason

DoG wrote:
Thu Jan 23, 2020 1:53 pm
Crystal shoved in the dual-TOS socket?
:bravo:
by exxos
Thu Jan 23, 2020 1:48 pm
Forum: CHAT FORUM
Topic: The puzzle why the booster stopped working for no reason
Replies: 9
Views: 82

Re: The puzzle why the booster stopped working for no reason

rubber_jonnie wrote:
Thu Jan 23, 2020 1:47 pm
Guessing it's something to do with the crystal on top of th MMU?
Keep pressing and guessing :lol:

EDIT

Will add it does boot up to a crash screen in emutos after displaying the logo..
by exxos
Thu Jan 23, 2020 1:44 pm
Forum: CHAT FORUM
Topic: The puzzle why the booster stopped working for no reason
Replies: 9
Views: 82

The puzzle why the booster stopped working for no reason

Lets see who can spot it :lol:

IMG_4837.JPG
IMG_4837.JPG (382.67 KiB) Viewed 82 times
by exxos
Thu Jan 23, 2020 1:27 pm
Forum: MONGREL H4 USER BUILDS
Topic: H4 What Has Been Tested
Replies: 13
Views: 177

Re: H4 What Has Been Tested

:thumbup:
by exxos
Thu Jan 23, 2020 12:59 pm
Forum: MONGREL H4 USER BUILDS
Topic: H4 What Has Been Tested
Replies: 13
Views: 177

Re: H4 What Has Been Tested

@btl ? I might have missed some posts in the mix of it all...

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