Search found 71 matches

by keli
Mon Jul 22, 2019 5:39 pm
Forum: STF REMAKE PROJECT
Topic: STFM Keyboard Remake
Replies: 13
Views: 289

Re: STFM Keyboard Remake

How are you going to do the controller? Are you going to salvage old HC6303's from existing keyboard, or are you going to use a different microcontroller and program it from scratch. Going with a new controller (maybe a Teensy board?), would allow adding new features. For instance one could separate...
by keli
Fri Jul 19, 2019 8:17 pm
Forum: STF REMAKE PROJECT
Topic: STFM Keyboard Remake
Replies: 13
Views: 289

Re: STFM Keyboard Remake

Isn't that the extra key between left shift and Z on non-us keyboards?
by keli
Thu Jul 18, 2019 3:27 pm
Forum: 3D MODELS
Topic: STFM case remake
Replies: 193
Views: 27256

Re: STFM case remake

Has anyone ever adapted an internal keyboard for a Mega ST? Don't mind taking this project on if youd both like? Not sure.. wasn't the mega keyboard the ST keyboard design just with a different connector on it ? The Mega keyboard feels better, but the signal and protocol is exactly the same as the ...
by keli
Mon Jul 08, 2019 6:27 am
Forum: MEMBER BLOGS
Topic: exxos blog - random goings on
Replies: 372
Views: 13972

Re: exxos blog - random goings on

So should I connect LDS and UDS to A0 on the flash chips ? With 16bit access I assume A0 would just end up low all the time. Though it dosent seem right as wouldn't keeping A0 low all the time basically disable all the odd addresses in each flash chip ?! I am still somewhat confused to how I ended ...
by keli
Thu Jul 04, 2019 10:26 am
Forum: MEMBER BLOGS
Topic: exxos blog - random goings on
Replies: 372
Views: 13972

Re: exxos blog - random goings on

It might be latching the data too late. According to the 68k manuals, the data may no longer be valid when R/~W is deasserted on a write cycle. Maybe you need to combine your WE with UDS and LDS, which are asserted low while data on the bus is valid?
by keli
Wed Jul 03, 2019 7:14 pm
Forum: MEMBER BLOGS
Topic: exxos blog - random goings on
Replies: 372
Views: 13972

Re: exxos blog - random goings on

Yeah I can understand that.. Though high and low byte order, I don't see how it would double the address ? I could ready E00000 and then E00001 on byte access, but I just read E00000 in 16bit and read the lot, so both addresses are accessed at once.. The address number doesn't change.. Edit Even th...
by keli
Wed Jul 03, 2019 6:17 pm
Forum: MEMBER BLOGS
Topic: exxos blog - random goings on
Replies: 372
Views: 13972

Re: exxos blog - random goings on

Hmm.. Interesting.. I'm not using LDS,UDS no. Will give it a try when I get home. Yeah your comment on having two roms on the bus gave me the hint. Since you have interleaved bytes from each one, you'll have to double up the addresses. E00000 is byte 0 on the first rom, E00001, byte 0 on the second...
by keli
Tue Jul 02, 2019 3:09 pm
Forum: MEMBER BLOGS
Topic: exxos blog - random goings on
Replies: 372
Views: 13972

Re: exxos blog - random goings on

POKEW (&HE05554),&HAAAA POKEW (&HE02AAA),&H5555 POKEW (&HE05554),&H9090 I can't read 5555 because I get address error. So have to use 5554 instead. Wouldn't you have to shift the addresses one bit to the left? I'm assuming you have connected the 68k A1 to the A0 line and are not decoding the LSB/US...
by keli
Thu May 02, 2019 11:01 am
Forum: HARDWARE DISCUSSIONS
Topic: Janus Atari ST Emulator
Replies: 2
Views: 251

Janus Atari ST Emulator

I was reminded of the Janus ISA card that contained a 68000, some RAM, and an MFP on a 16 bit ISA card. The card made it possible to run TOS using a 386 PC as a host providing graphics and input. http://www.stcarchiv.de/stc1994/11/janus-atari-emulator From a quick glance at images of the board it lo...
by keli
Mon Aug 13, 2018 2:53 pm
Forum: CHAT FORUM
Topic: GEM in 2018 ?
Replies: 25
Views: 2491

Re: GEM in 2018 ?

Yes, that's what some call nice solution. But I would rather to hear some arguments - for instance why you think that SW accessing HW is bad, and why it "works bad in EmuTOS and works with original TOS" . Just don't get me wrong. I'm for making some new TOS compatible replacement or call it whateve...