Search found 99 matches

by neanderthal
Fri Feb 21, 2020 4:34 pm
Forum: Hardware
Topic: Atari STE only boot in High Res
Replies: 36
Views: 1158

Re: Atari STE only boot in High Res

Pin4 is the 32Mhz Buffer Mainclock Output. So the 1,3V are OK but the chip is faulty I think. The Pin1 is when a SM124 connect low (0V) and high (5V) if no Monitor or a RGB Display is connected and Pin7 must change. Yeap,fault tracing with a multimeter is a bit dodgy like that.One has to think that...
by neanderthal
Wed Feb 19, 2020 3:36 am
Forum: Hardware
Topic: Atari STE only boot in High Res
Replies: 36
Views: 1158

Re: Atari STE only boot in High Res

And since we are on the learn how the stuff works side of things,here is a typical data sheet for a 257,combine that with the schematic takeout above and you begin to get what it does,pretty much just first page that is of interest here. Pinout and function table. In the STE we only use 2 (1 and 2) ...
by neanderthal
Wed Feb 19, 2020 3:22 am
Forum: Hardware
Topic: Atari STE only boot in High Res
Replies: 36
Views: 1158

Re: Atari STE only boot in High Res

Some measurement with monitor unplugged : U405: Pin 1 = 5.02 v dc Pin 2 = 0v Pin 3 = 0.924 v pin 4 = 1,374 v pin 5 = 5,02 v pin 6 = 0v pin 7 = 191 mV pin8 = 0v So clearly i got no 5V on pin 7. Could i solder a wire between pin 1 and 7 to force the ST to go in low mode? Hmm,,would most likely just c...
by neanderthal
Tue Feb 18, 2020 9:34 pm
Forum: Hardware
Topic: Atari STE only boot in High Res
Replies: 36
Views: 1158

Re: Atari STE only boot in High Res

About 1.6 ohms or so?,Trixy.depends a bit on your probes and such.Rather easy to get some ohms when using connectors and so.Pity I cant remember what had to change my U405,exept that got the same style of problem when used a HC style chip.Then again pins are exposed directly to external so a direct ...
by neanderthal
Tue Feb 18, 2020 7:39 pm
Forum: Hardware
Topic: Atari STE only boot in High Res
Replies: 36
Views: 1158

Re: Atari STE only boot in High Res

And if truly grounded like almost 0 ohm style,I think that trace is totally visible on the solder side of board.Maybe check it out with magnifying glass or something first.That is pin 4 on monitor connector to pins 2 and 6 on U405.I have found stranger things with just visual fault tracing.
by neanderthal
Tue Feb 18, 2020 6:18 pm
Forum: Hardware
Topic: Atari STE only boot in High Res
Replies: 36
Views: 1158

Re: Atari STE only boot in High Res

Pin6 on U405 like real grounded or logical?..If real then try to find out where its grounded.If logical might be chip itself(U405)..I read this mostly cause busted my U405 on a machine testing something ages ago.And only afterwards reconized it has to be a 74S version..So I had to use a pullup on th...
by neanderthal
Sat Feb 08, 2020 10:43 pm
Forum: Coding
Topic: Minix 2.0.2 and 2.0.4 sources adapted for the Atari ST
Replies: 4
Views: 674

Re: Minix 2.0.2 and 2.0.4 sources adapted for the Atari ST

Neato,,was looking for something just totally odd todo,,and was thinking about revisiting old minix land..Now then,just to find the old disks to start with :)
by neanderthal
Wed Jan 15, 2020 3:30 pm
Forum: Hardware
Topic: Game Port to STE Enhanced Ports
Replies: 5
Views: 1094

Re: Game Port to STE Enhanced Ports

~100K see "STE advanced controller port info update" I had lots of jitter with a old analog stick, but it works. About the jitter,could be rectified with having a very small cap over input,,ie between ground and input,to filter out quick jumps in voltage.Then again remember when did the j...
by neanderthal
Tue Jan 07, 2020 6:31 pm
Forum: Hardware
Topic: IDE autoboot for TOS 1.04
Replies: 12
Views: 1105

Re: IDE autoboot for TOS 1.04

Nice,even if I prefer to boot my IDE from floppy on my 'gaming' machine.
by neanderthal
Tue Jan 07, 2020 1:23 pm
Forum: Hardware
Topic: Game Port to STE Enhanced Ports
Replies: 5
Views: 1094

Re: Game Port to STE Enhanced Ports

Hehe,,sounds like one of my old projects that never gotten around to do.But yeah if remember correctly the paddle inputs are same sort of thing.ie use some sort voltage divider(old paddle/joystick style) for input and then read the representing value from the proper register in machine,machine being...
by neanderthal
Mon Jan 06, 2020 10:02 pm
Forum: Games - General
Topic: Moria game
Replies: 3
Views: 687

Re: Moria game

A old ST mono adventure game?,,at least the screen dumps on mobygames was monochrome.Have to test that one some day when some time.
by neanderthal
Sat Jan 04, 2020 1:02 pm
Forum: Hatari
Topic: Fastcopy pro 1.2
Replies: 2
Views: 782

Re: Fastcopy pro 1.2

I think that using a tool on PC like MSA2ST (on any other image converter) is a better solution then 'copying' floppy under emulator. Thats the thing,there are a few of them around, have a compiled version on local machine here(msatool),,but I want MSA files which I can make real floppies from.Only...
by neanderthal
Fri Jan 03, 2020 1:31 am
Forum: Hatari
Topic: Fastcopy pro 1.2
Replies: 2
Views: 782

Fastcopy pro 1.2

Was gonna use Hatari for some .ST to .MSA conversion and stumbeled on this sort of odd thing. Firing up Fcopy had some odd settings and took a while before remembered that these old programs saves settings in main program file. So a heads up on that if thinking that its something more problematic. M...
by neanderthal
Mon Dec 30, 2019 11:02 am
Forum: MIDI Software and Hardware
Topic: MIDI Trackers
Replies: 8
Views: 1481

Re: MIDI Trackers

Piano roll style?,,like in key edit cubase? Maybe check out the other editors,score,list,drum.Or maybe you are just out for a tracker program with midi possibilities? Actually sort of interested in those myself since never used trackers that much.
by neanderthal
Sat Dec 21, 2019 10:21 pm
Forum: Hardware
Topic: ATARI STE 4 MB 4 Bombs after Memmory Test
Replies: 4
Views: 755

Re: ATARI STE 4 MB 4 Bombs after Memmory Test

nOw I got curious,,what diskdrive? HD/floppy/something else? :)
by neanderthal
Thu Dec 19, 2019 2:18 pm
Forum: For sale / Wanted
Topic: FS: motorola mc68hc11 handyboard (brand new)
Replies: 6
Views: 1239

Re: FS: motorola mc68hc11 handyboard (brand new)

yup, talking about the "serial bootstrap" protocol: it's a firmware included in the built-in ROM, and the download software is not complex, it can be written in python, or C, in a couple of hours :D Yeah wrote mine pretty fast back in the day even if doing stuff like that first time.In as...
by neanderthal
Mon Dec 16, 2019 7:18 pm
Forum: For sale / Wanted
Topic: FS: motorola mc68hc11 handyboard (brand new)
Replies: 6
Views: 1239

Re: FS: motorola mc68hc11 handyboard (brand new)

Cool,reminds me of when did a handmade rs232 converter to bootstrap a hc11 from my ST :)..Wonder if I have the loader soft somewhere still.
by neanderthal
Tue Dec 03, 2019 9:21 am
Forum: Applications
Topic: TOS Switch and OS behaviour
Replies: 1
Views: 548

Re: TOS Switch and OS behaviour

Interesting point,since the TOS roms were not really designed for 'hotswapping' so to speak.So the code could assume lots of things preset according to itself at a warmboot. I had this idea about using bootloadable SRAM:s as TOS replacement once for easy testing and such,but never got around to maki...
by neanderthal
Sat Nov 30, 2019 4:30 am
Forum: Applications
Topic: RPMint Distribution
Replies: 32
Views: 14306

Re: RPMint Distribution

So yeah,any ideas about it?,just thinking about the fact that site show the typical apache start or something ;)
by neanderthal
Sat Nov 30, 2019 4:18 am
Forum: Professionals
Topic: Falcon and Jag pad
Replies: 2
Views: 876

Re: Falcon and Jag pad

Well at least mine is ;)..And yea sort of put in checks for machine and stuff in there so ye folks could play it straight of..btw for those who havent tested..Donkey JR saves video mode and returns with previous video mode on the machines that could test.
by neanderthal
Wed Nov 27, 2019 6:10 pm
Forum: Professionals
Topic: Using the Falcon's expansion connector
Replies: 4
Views: 1021

Re: Using the Falcon's expansion connector

Many thanks. I hadn't realsed The CT60 had published specs. That will be very interesting to have a look at the schematic and compare to mine! Well not maybe proper docs as such but stuff that he did when figuring out stuff?,always helpfull :) I found the timing diags interesting and the partial GA...
by neanderthal
Tue Nov 26, 2019 9:18 pm
Forum: Professionals
Topic: Using the Falcon's expansion connector
Replies: 4
Views: 1021

Re: Using the Falcon's expansion connector

Well,,you can check out the Falcon030 dev doc pdf from 1993 to begin with, page 34 about the internal expansion port if not done so already. Around at https://docs.dev-docs.org/ Has some essential stuff about it there. Czubas old CT site has some interesting timing diagrams and some stuff aswell. ht...
by neanderthal
Tue Nov 26, 2019 12:10 pm
Forum: 680x0
Topic: A question about timers
Replies: 2
Views: 663

Re: A question about timers

Delay mode is pretty much as it sounds,internal delay.Pulse width measurement operation as it is called uses external TAI and TBI signals to enable timer.See section 6.1.2 in MFP manual for details. Hmm,,noticed that Atari places dont seem to have that one,funny,here is a link to a proper user manua...
by neanderthal
Wed Nov 13, 2019 9:56 pm
Forum: Hatari
Topic: hatari 2.2.1 not seeing real joypads on ubuntu
Replies: 8
Views: 2382

Re: hatari 2.2.1 not seeing real joypads on ubuntu

Maybe a problem with permissions? User should be member of group input, if I remember correctly. thanks, I just added my user to input and restarted, unfortunately I still have the same problem. :evil: Yeah,,remember had some odd probbs myself when tested that out,,tweaked around with /dev/input fi...
by neanderthal
Sat Oct 26, 2019 2:14 pm
Forum: MIDI Software and Hardware
Topic: Midi Soft thru
Replies: 12
Views: 2835

Re: Midi Soft thru

Alternatively you could use the Atari's hardware MIDI thru but that entails using external hardware to switch between out and thru. Yeap,,exactly what I am avoiding here :) For the typical just want to do some tunes now thing,and dont want to pull the connectors in and out,specially since my machin...

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