The Lynx FDC Project and issues

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Womble
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Re: The Lynx FDC Project and issues

Mensajepor Womble » 25 Nov 2020 10:49

Último mensaje de la página anterior:

Lovely lynxen collection there Oracle :)

How do you get your pics to come inline, the image tag doesn't seem to work for me? Are those images stored local to the site?

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Womble
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Re: The Lynx FDC Project and issues

Mensajepor Womble » 25 Nov 2020 10:59

Here's a rare pic :)

This was the vision for the re-released Lynx range, after the company was sold off to Bob Jones and the user group.

It's a standard 48k, but some spray paint and letraset and a new badge :)

The Leisure was supposed to be the 48/96 and the laureate was the 128.

Imagen

Imagen


OOOooo we have marquee here, my basket overfloweth...

Wooohoo

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Re: The Lynx FDC Project and issues

Mensajepor jltursan » 25 Nov 2020 12:06

Can't see the Lynx pictures...:-(

How do you get your pics to come inline, the image tag doesn't seem to work for me? Are those images stored local to the site?

The forum has a local storage (much better than deep linking images). To attach an image to your post notice this when in Full Editor mode:

Attachments.png
Attachments.png (11.34 KiB) Visto 222 veces

In attachments you can add files (images) and then place them inline your message :-)

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Womble
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Re: The Lynx FDC Project and issues

Mensajepor Womble » 25 Nov 2020 13:28

Thanks jl, if you right click on those image icons above it does let me load them in a new tab.

Test

Imagen
Bobs Lynx.jpg
(1.27 MiB) No descargado aún


Imagen
bobs lynx 2.jpg
(3.73 MiB) No descargado aún

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Womble
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Re: The Lynx FDC Project and issues

Mensajepor Womble » 25 Nov 2020 13:34

Hmm, still not displaying inline, but at least the images are local

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ron
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Re: The Lynx FDC Project and issues

Mensajepor ron » 25 Nov 2020 14:26

That's because are too big !
Try reducing dpi !
And take a look on your edited post.-

Better if you use .png max 800*600.
When using another formats, like .jpg, sometimes size is enormous and can't be displayed.
And it saves space in our server too.

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Re: The Lynx FDC Project and issues

Mensajepor ron » 25 Nov 2020 14:31

bobs lynx 2.png
bobs lynx 2.png (732.32 KiB) Visto 204 veces

Bobs Lynx.png
Bobs Lynx.png (561.88 KiB) Visto 204 veces

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Womble
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Re: The Lynx FDC Project and issues

Mensajepor Womble » 25 Nov 2020 15:13

Ah thanks ron, will resize them in future :)

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Re: The Lynx FDC Project and issues

Mensajepor oracle_jedi » 25 Nov 2020 18:32

Womble escribió:Here's a rare pic :)

This was the vision for the re-released Lynx range, after the company was sold off to Bob Jones and the user group.

It's a standard 48k, but some spray paint and letraset and a new badge :)

The Leisure was supposed to be the 48/96 and the laureate was the 128.



Wow. Never seen one like that before. Adrian Graham of binarydinosaurs has a Lynx 128 with a white-ish top case plastic but I always assumed someone had just painted that for the heck of it.

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Re: The Lynx FDC Project and issues

Mensajepor jltursan » 25 Nov 2020 19:01

It somewhat remembers me the CPC 464 keyboard colors...

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Re: The Lynx FDC Project and issues

Mensajepor ron » 26 Nov 2020 08:53

hellopetefpgalynx.png
hellopetefpgalynx.png (76.84 KiB) Visto 169 veces


Regarding to the issue of disk controller deployment in Lynx.
This Camputers Lynx core, loads software very fine, but you need to load from external tape or audio.
Actually we don't have a TAP loader to integrate into the core, should be a nice beginning.

To Do.
=====

1) Add TAP loader to load tapes directly from OSD.
2) Deploy a branch to cover Lynx FDC

MESS does support FDC, so you can manage disks.

Let's talk about how to improve this core. Cheers

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Re: The Lynx FDC Project and issues

Mensajepor Womble » 26 Nov 2020 09:52

Looks lovely ron,

It may be quicker to implement disks first if you have the 1793 core

Does the core run on Mister only or does it also work on the ZXUno (Mister seems to be £200+ whereas ZXUno is £65)

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Re: The Lynx FDC Project and issues

Mensajepor ron » 26 Nov 2020 11:42

Runs on ZXUno ( limited without OSD or options ) in MiST, MiSTica and SiDi and of course on MiSTer.
A very nice FPGA board is the SiDi: https://manuferhi.com/p/sidi

It's 99€ , aprox 89 pounds.

update: The SiDi's Wiki in english: https://github.com/ManuFerHi/SiDi-FPGA/wiki

And the cores: https://github.com/ManuFerHi/SiDi-FPGA/ ... mputerLynx

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Re: The Lynx FDC Project and issues

Mensajepor jltursan » 27 Nov 2020 19:30

Oh, my, I think I need to get in contact again with Frank, comparing their schematics with the originals, they're clearly different -banghead

I've started with the WE pulse width generator and bang, it's not the same:

original_LS221_1A_signal.PNG
original_LS221_1A_signal.PNG (643.31 KiB) Visto 130 veces

Original has the LS221's 1A signal routed to two OR gates from IC14 and to pin 15 of interface card connectors.

New schematic routes 1A to a third OR gate IC2!, no idea if this is intended; but this OR gate is originally routed to FDC1793's A0 and pin 14 of interface card connector:
original_1793_A0.PNG
original_1793_A0.PNG (401.41 KiB) Visto 130 veces


In the new schematic, as this OR gate is not free, routes directly A0 signal to pin 14:

Wrong A0.PNG
Wrong A0.PNG (40.39 KiB) Visto 130 veces


That's not good at all, I've lost a lot of time and effort working on it -banghead

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Re: The Lynx FDC Project and issues

Mensajepor Womble » 27 Nov 2020 20:58

What format is that new schematic in? Do you have the whole in PNG that I can see?

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Re: The Lynx FDC Project and issues

Mensajepor jltursan » 27 Nov 2020 23:21

The schematics are in DipTrace format. It can't export to any other image format; but I can try to generate a PDF with the right drivers. Maybe are you used to DipTrace?, Eagle perhaps?

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Re: The Lynx FDC Project and issues

Mensajepor Womble » 28 Nov 2020 01:16

I use Eagle, but only because the engraver is set up for it. I should start learning one of the new open source ones like KiCad.
I used to use EdWin which was pretty nice for the time in the mid 90s.

There are a couple of different schematics for the controller board I've seen, one is French and uses a 1770, whether this means a different ROM in the addon module I don't know but the schematic is very simple when compared to the original.

Of course I have no way of knowing whether these interfaces work, I do not know the author of these designs.

http://www.retrogubbins.co.uk/downloads ... c-french-1

http://www.retrogubbins.co.uk/downloads ... c-french-2


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