Search found 4707 matches

by exxos
Sun Jan 13, 2019 11:20 am
Forum: ROM UPGRADES
Topic: 28pin to 32pin EPROM conversion
Replies: 12
Views: 781

Re: 28pin to 32pin EPROM conversion

Looks like it was a typo and should have said right. Will correct it later.
by exxos
Sat Jan 12, 2019 12:30 pm
Forum: STF REMAKE PROJECT
Topic: un-f*ck boards new order
Replies: 3
Views: 112

Re: un-f*ck boards new order

Forgottenmyname wrote:
Sat Jan 12, 2019 11:33 am
What do you Think about retrofitting the v3 dac board to a normal stfm etc?
I'm all for it. Though I don't know if I would ever get time to re-work the PCB for it. I think the V3 eagle file is uploaded somewhere if anyone wants to have a stab at it.
by exxos
Fri Jan 11, 2019 10:39 pm
Forum: STF REMAKE PROJECT
Topic: un-f*ck boards new order
Replies: 3
Views: 112

un-f*ck boards new order

I'm getting 10 of the V3 video-dac boards made, plus some more RGB connector un-f*ck boards for Icky..

Is there any other essentials of any of these un-f*ck boards which anyone needs ?

Will be doing the order later tonight as I want to get my booster boards in the que as quick as possible...
by exxos
Thu Jan 10, 2019 11:47 pm
Forum: ST 16MHz V2.X SERIES BOOSTERS
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Replies: 274
Views: 21747

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

Been trying most of today again to get to the bottom of these issues and not getting anywhere. I need to try switching the CPU into 8MHz during BGACK as that is what I do on the STE boosters... Then if the SEC booster works, then I know where the problem is.. I think this is more final V2 now... 2f3...
by exxos
Thu Jan 10, 2019 6:59 pm
Forum: ST 16MHz V2.X SERIES BOOSTERS
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Replies: 274
Views: 21747

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

AS on the CPU will go to Z, but not your ST_AS as it's an output of the CPLD unless you tell it to set it to Z ... by using ST_AS.OE SEC CPU AS -> CPLD -> ST_AS CPU_AS = Z -> CPLD -> ST_AS is either 0 or 1 depending on internal pull-up config and how the CPLD behave when a signal is driven by an in...
by exxos
Thu Jan 10, 2019 6:53 pm
Forum: RAM UPGRADES
Topic: Which RAM Upgrade to you suggest
Replies: 4
Views: 68

Re: Which RAM Upgrade to you suggest

Just look at the install page its shows shifter pin 39 wire connected..


http://www.exxoshost.co.uk/atari/last/V ... /index.htm
by exxos
Thu Jan 10, 2019 6:41 pm
Forum: RAM UPGRADES
Topic: Which RAM Upgrade to you suggest
Replies: 4
Views: 68

Re: Which RAM Upgrade to you suggest

The 0020 SIMM kits is actually discontinued now. The only one still selling is 0035 https://www.exxoshost.co.uk/atari/last/storenew/#0035
by exxos
Thu Jan 10, 2019 6:13 pm
Forum: ST 16MHz V2.X SERIES BOOSTERS
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Replies: 274
Views: 21747

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

:WTF:

EMUTOS now gives a new error...

2.jpg
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by exxos
Thu Jan 10, 2019 5:52 pm
Forum: ST 16MHz V2.X SERIES BOOSTERS
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Replies: 274
Views: 21747

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

I need a sanity check here... If I isolate ST_AS like this... ST_AS.OE = ST_BGACK; Of course it works... BUT... When something is in control of the bus other than the CPU, it has to request the bus, as such, the CPU enters tristate and all signals are isolated.. So if thats the case, why doesn't rem...