Search found 336 matches

by rpineau
Sat Jan 19, 2019 11:41 pm
Forum: ST 16MHz V2.X SERIES BOOSTERS
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Replies: 295
Views: 22464

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

@PaulJ : I stand corrected :) (I'm always happy to be wrong, it means I'm learning :) ).

Glad to see other programmer being able to JTAG these devices.
by rpineau
Sat Jan 19, 2019 5:38 pm
Forum: ST 16MHz V2.X SERIES BOOSTERS
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Replies: 295
Views: 22464

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

The chipmax2 doesn't .. it does the ATF16/20/22Vxx, ATV750/1500/2500 .. but not the ATF15xx which have their proprietary algo. They require a specific programmer , the ATDH1150USB (which as you can imagine only does these and nothing else). The ATF15xx family : http://ww1.microchip.com/downloads/en/...
by rpineau
Thu Jan 17, 2019 6:12 pm
Forum: MONGREL EDITION (version 2)
Topic: exxos IDE interface (untested)
Replies: 35
Views: 2080

Re: exxos IDE interface (untested)

Do not mistake register number to data bit on the bus
Register 0 to 7 are 16 bit register, and so are register 8 to 15 and they are accessed as 16 bit registers even if only the lower 8 bit contain actual data for some register.
So CS0 and CS1 select the register bank, not the bus width.
by rpineau
Thu Jan 10, 2019 6:56 pm
Forum: ST 16MHz V2.X SERIES BOOSTERS
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Replies: 295
Views: 22464

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 inp...
by rpineau
Tue Jan 08, 2019 7:42 pm
Forum: ELECTRONICS
Topic: Eagle libs - why you can't trust them
Replies: 8
Views: 267

Re: Eagle libs - why you can't trust them

That is really weird.
May be I should make a proper one.
by rpineau
Tue Jan 08, 2019 7:22 pm
Forum: ST 16MHz V2.X SERIES BOOSTERS
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Replies: 295
Views: 22464

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

On the 68020 card we do have to deal with this and we need to take the BR/BG/BGACK from the ST as well as the ST_AS and CPU_AS to make sure we let the system know when the bus is used by the CPU (68020) and thus assert ST_AS to prevent the glue/GSTMCU from trying to take the bus as there is a bus cy...
by rpineau
Tue Jan 08, 2019 7:05 pm
Forum: ELECTRONICS
Topic: Eagle libs - why you can't trust them
Replies: 8
Views: 267

Re: Eagle libs - why you can't trust them

If you copied it from another lib in Eagle, make sure you took the TQFP64-10x10 one.
by rpineau
Tue Jan 08, 2019 7:02 pm
Forum: ELECTRONICS
Topic: Eagle libs - why you can't trust them
Replies: 8
Views: 267

Re: Eagle libs - why you can't trust them

That is really weird. I've used the Eagle TQFP100 and that one was fine. Same with the TQFP44 package. TQFP64 has a pitch of 0.5mm center to center of pins. Pin width should be about 0.20 mm proper dimension can be found in this doc : http://pdf.datasheetcatalog.com/datasheets/134/306806_DS.pdf Make...