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Search: Posts Made By: kaffer
Forum: support.Hardware Yesterday, 23:47
Replies: 2
Views: 85
Posted By kaffer
Membrane

Membrane
Forum: support.Hardware 16 November 2018, 17:34
Replies: 5
Views: 180
Posted By kaffer
I would simply replace the Agnus socket at this...

I would simply replace the Agnus socket at this point. It is the most likely cause.

EDIT: Oh you already did that... Is this issue exactly reproducible every time at the exact same place in the...
Forum: support.Hardware 06 November 2018, 22:54
Replies: 12
Views: 1,337
Posted By kaffer
No, a 1-ohm resistor is a bizarre and...

No, a 1-ohm resistor is a bizarre and inappropriate choice in the first place. Unless you can fit a proper 3-pin EMI filter (as used in dozens of other places on the Rev 3 board) you are better off...
Forum: support.Hardware 06 November 2018, 17:07
Replies: 5
Views: 210
Posted By kaffer
SysTest:...

SysTest: https://github.com/keirf/Amiga-Stuff/blob/master/README.md

You will need some way to write the ADF to a physical disk, or else have a Gotek to run the ADF direct.

It could be memory...
Forum: support.Hardware 06 November 2018, 15:06
Replies: 12
Views: 1,337
Posted By kaffer
I fixed a Rev 3 with these symptoms today. First...

I fixed a Rev 3 with these symptoms today. First I noted that the board hacks on the underside of the PCB around the video power and RGB CSYNC seem to be factory standard. The video power mods serve...
Forum: Coders. System 27 October 2018, 16:00
Replies: 14
Views: 472
Posted By kaffer
Very elegant sir. :great I'm going to squirrel...

Very elegant sir. :great I'm going to squirrel this away for future reference.
Forum: Coders. System 27 October 2018, 13:09
Replies: 14
Views: 472
Posted By kaffer
That's really not so bad then, and I agree that...

That's really not so bad then, and I agree that seems reasonable since no I/O gets issued on the IOReq.

I also like ross's approach but would probably do direct hw access and ignore trackdisk...
Forum: Coders. System 27 October 2018, 12:46
Replies: 14
Views: 472
Posted By kaffer
For production use, how much would you say this...

For production use, how much would you say this needs to be cleaned up? eg. my C code version is at least as many lines as this asm, but then it does everything the PRM-mandated way: allocates a...
Forum: Coders. System 27 October 2018, 11:18
Replies: 14
Views: 472
Posted By kaffer
Yes I think for handover to a custom loader your...

Yes I think for handover to a custom loader your approach makes lots of sense, you just care about finding your boot disk in some drive. Filtered by available drives with a disk inserted is going to...
Forum: Coders. System 27 October 2018, 10:03
Replies: 14
Views: 472
Posted By kaffer
Answer: OpenDevice each trackdisk unit 0-3 in...

Answer: OpenDevice each trackdisk unit 0-3 in turn and check for a match on iotd_Req.io_Unit compared with the same field in the IOReq passed to the bootblock in A1.

This is a bit of a pain in the...
Forum: Coders. System 27 October 2018, 08:58
Replies: 14
Views: 472
Posted By kaffer
Bah :( I will try out some other options first......

Bah :( I will try out some other options first... thank you!
Forum: News 27 October 2018, 08:58
Replies: 928
Views: 121,912
Posted By kaffer
The problem may be on the Amiga side, as C-A-A...

The problem may be on the Amiga side, as C-A-A does not reset the Gotek. Unless FlashFloppy has done something to drive the Amiga into a bad state, but I've not had other reports of this.
Forum: Coders. System 26 October 2018, 16:39
Replies: 14
Views: 472
Posted By kaffer
Determining DFn: boot device in bootblock

Hi,

My problem is to write a custom bootblock which can determine which floppy unit number it was loaded from. Equivalently, to determine which floppy unit number the trackdisk.device IOReq passed...
Forum: News 26 October 2018, 12:56
Replies: 928
Views: 121,912
Posted By kaffer
What firmware version? When you say Amiga reset,...

What firmware version? When you say Amiga reset, do you mean power cycle or C-A-A?
Forum: News 12 October 2018, 10:36
Replies: 928
Views: 121,912
Posted By kaffer
Everything is theoretically achievable on Gotek...

Everything is theoretically achievable on Gotek hardware, it is mainly a case of designing a suitable low-bandwidth format which can express these various protected track formats (eg raw flux formats...
Forum: News 09 October 2018, 16:06
Replies: 928
Views: 121,912
Posted By kaffer
FlashFloppy needed a tweak to support HFEv2....

FlashFloppy needed a tweak to support HFEv2. Actually the format is basically the same as HFEv1 so it was trivial. Although FlashFloppy next release will mount your HFEv2 of Eliminator, I doubt it...
Forum: News 07 October 2018, 20:58
Replies: 684
Views: 223,961
Posted By kaffer
Green LED is drive-select -- if it's permanently...

Green LED is drive-select -- if it's permanently on then the ribbon cable is wrong way round. Red LED is LED-display data line -- it lights only when the display changes.
Forum: News 07 October 2018, 11:38
Replies: 928
Views: 121,912
Posted By kaffer
How do those two titles fail? Does the tool fail...

How do those two titles fail? Does the tool fail to generate an HFEv3 image, or does it produce one but it's no good?

I believe the HFEv3 writer is less mature than the other HFE targets, and may...
Forum: News 07 October 2018, 10:42
Replies: 928
Views: 121,912
Posted By kaffer
Can you send me the HFEv2? In the zone or email,...

Can you send me the HFEv2? In the zone or email, cloud, whatever.
Forum: News 07 October 2018, 10:39
Replies: 684
Views: 223,961
Posted By kaffer
At the rear of the Gotek make sure you have a...

At the rear of the Gotek make sure you have a jumper at S0 position only.

If the green LED is permanently lit then the ribbon cable may be wrong way round.
Forum: News 07 October 2018, 01:23
Replies: 928
Views: 121,912
Posted By kaffer
How far did you get? If you got a non-working...

How far did you get? If you got a non-working HFE, try converting to HFEv3.

If you failed to load an IPF into the HxC tools, you need to have the SPS/IPF library installed in the right place (this...
Forum: News 07 October 2018, 01:22
Replies: 928
Views: 121,912
Posted By kaffer
The protocol is not quite I2C -- it's basically...

The protocol is not quite I2C -- it's basically the same except no address bits are sent.

As for the pin out... the data sheet for the display controller ic is online so you could probably buzz...
Forum: News 29 August 2018, 00:02
Replies: 928
Views: 121,912
Posted By kaffer
If I ever support more lines of text on the...

If I ever support more lines of text on the 128x64 OLED then I will support x04 LCD displays too. It's mainly just a case of not having designed text to put on the extra lines.
Forum: News 24 August 2018, 08:20
Replies: 928
Views: 121,912
Posted By kaffer
You have a short to ground at jumper position JA...

You have a short to ground at jumper position JA (which is used to implement the optional third button).

Check that the only jumper at the rear of your Gotek is at position S0. Remove any other...
Forum: News 14 August 2018, 17:28
Replies: 928
Views: 121,912
Posted By kaffer
https://i.ebayimg.com/images/g/9v4AAOSw~ktZzRDF/s-...

https://i.ebayimg.com/images/g/9v4AAOSw~ktZzRDF/s-l300.jpg
Forum: project.SPS (was CAPS) 02 July 2018, 21:11
Replies: 22
Views: 1,983
Posted By kaffer
You might want to read the other recent top...

You might want to read the other recent top thread in this section and decide if this is worth your time.
Forum: project.SPS (was CAPS) 02 July 2018, 09:57
Replies: 22
Views: 1,983
Posted By kaffer
What's your aim? To analyse/convert the dumps...

What's your aim? To analyse/convert the dumps yourself? Or to send them to SPS and hope they respond?
Forum: News 02 July 2018, 09:26
Replies: 928
Views: 121,912
Posted By kaffer
The OS assumes a DD drive by default, but will...

The OS assumes a DD drive by default, but will respect the HD ID if it sees it. It checks every time a disk is inserted.
Forum: News 25 June 2018, 19:16
Replies: 928
Views: 121,912
Posted By kaffer
Even though it's insanely easy via update file on...

Even though it's insanely easy via update file on USB stick? </advert> ;)

https://github.com/keirf/FlashFloppy/wiki/Firmware-Update
Forum: News 25 June 2018, 17:36
Replies: 928
Views: 121,912
Posted By kaffer
That will just work, Amigas don't have built-in...

That will just work, Amigas don't have built-in ID circuitry for DF0, as the OS by default assumes a double-density DF0 drive is present. Hence FlashFloppy's ID generation for HD images will simply...
Forum: News 25 June 2018, 14:24
Replies: 928
Views: 121,912
Posted By kaffer
voyager, Jope: You are correct of course, an...

voyager, Jope: You are correct of course, an ordinary Amiga drive enclosure will always emit the Amiga-DD ID sequence and that overrides he Amiga-HD sequence. Hence HD disks get identified as DD and...
Forum: News 20 June 2018, 20:08
Replies: 928
Views: 121,912
Posted By kaffer
HD ADF: My own light testing was on an A500 with...

HD ADF: My own light testing was on an A500 with Kick 3.1. It seemed to reliably detect HD vs DD disks and that is the main battle. Feel free to raise an issue ticket on Github. If you do so please...
Forum: News 12 June 2018, 13:47
Replies: 928
Views: 121,912
Posted By kaffer
New release v0.9.21a with HxC-Compat-Mode...

New release v0.9.21a with HxC-Compat-Mode Improvements
https://github.com/keirf/FlashFloppy/wiki/Downloads

* HxC-Compat File Selectors:
---- New font on Amiga and Atari ST
---- Faster...
Forum: News 12 June 2018, 13:44
Replies: 928
Views: 121,912
Posted By kaffer
It may well be fixable, check the soldering, it...

It may well be fixable, check the soldering, it can occasionally be a bit wonky.
Forum: News 12 June 2018, 09:55
Replies: 928
Views: 121,912
Posted By kaffer
My OLED-modded Gotek happens to be SFRC922C,...

My OLED-modded Gotek happens to be SFRC922C, they're the ones with a 5+2 pin programming header. So it does work, and SFRC922C has been around a long time with no other complaints regarding the...
Forum: News 11 June 2018, 17:49
Replies: 928
Views: 121,912
Posted By kaffer
Perhaps you just have a broken Gotek? :) Or extra...

Perhaps you just have a broken Gotek? :) Or extra jumpers that shouldn't be there? (Check no extra jumpers at rear of Gotek)

Why do you think it is "Rev C"? Also try tracing the rotary header pins...
Forum: project.SPS (was CAPS) 30 May 2018, 10:05
Replies: 95
Views: 27,947
Posted By kaffer
Now fixed.

Now fixed.
Forum: project.SPS (was CAPS) 26 May 2018, 22:05
Replies: 95
Views: 27,947
Posted By kaffer
It's a harmless idiom. Looks like need a...

It's a harmless idiom. Looks like need a cc-option-add line in Rules.mk to disable this new warning. I might have to install GCC8 and fix this I guess, unless someone wants to make a patch and issue...
Forum: News 26 May 2018, 17:58
Replies: 928
Views: 121,912
Posted By kaffer
Native IPF is very much a stretch goal. Right now...

Native IPF is very much a stretch goal. Right now you can convert to HFEv3, which is supported.
Forum: News 01 May 2018, 22:10
Replies: 928
Views: 121,912
Posted By kaffer
New release v0.9.19a with Amiga HD Support ...

New release v0.9.19a with Amiga HD Support
https://github.com/keirf/FlashFloppy/wiki/Downloads

* Amiga: Support high-density disk images
--- ADF: 1760kB images
--- Generate HD-ID pattern on...
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