Wires? Pah.....

discuss PC<>Acorn file transfer issues & the use of FDC, XFER, Omniflop/disk etc.
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MartinB
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Re: Wires? Pah.....

Post by MartinB » Tue Jan 29, 2019 12:05 am

Chet - I’ll send a PM with my email address and we’ll go from there..... :)

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MartinB
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Re: Wires? Pah.....

Post by MartinB » Thu Feb 07, 2019 9:04 pm

As promised, for chrisH (and others), here’s the link to the recommended USB-to-RS232 adaptor and supplier......

https://www.tronisoft.com/store/adaptor ... -90cm.html


8E438A5E-348E-4C68-B664-ACE37F516F51.png

chrisH
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Re: Wires? Pah.....

Post by chrisH » Thu Feb 07, 2019 9:26 pm

Perfect - thanks!

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MartinB
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Re: Wires? Pah.....

Post by MartinB » Fri Feb 08, 2019 10:39 pm

@ Chris and Stuart - all being well, should be able to post in the morning but I’ll email to confirm..... 👍



E6795C91-BD22-408C-B1D4-AE9803DDA61E.jpeg

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aerworuld
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Re: Wires? Pah.....

Post by aerworuld » Mon Feb 11, 2019 12:51 pm

Martin, thank you so much!

Now that I have UPURS for my Master 128, my world is complete again! Outstanding piece of kit, just like Elk EUP 8)

To celebrate, here's a piccy that I drew in AMX Super Art and transferred across to the PC to test the new cable out. AMX Super Art is state of the art compared to the AMX Art that I'm used to on the Elk... colour and everything!


intel.PNG


Now i just need to figure out how to have both the mouse and the UPURS plugged into the User Port on the 128 at the same time to save switching plugs ;-)

thanks again,
Stu

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daveejhitchins
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Re: Wires? Pah.....

Post by daveejhitchins » Mon Feb 11, 2019 4:09 pm

Stuart . . . That's why you have an Electron and AP5 :lol:

Dave H :D
Parts: UM6502CE, GAL22V10D, GAL16V8D, AS6C62256A, TC514400AZ, WD1772, R6522, TMS27C512, AT28C256
Products: ARA II, ARA III, ABR, ATI, AP6, MGC, AP5 . . .
For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

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MartinB
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Re: Wires? Pah.....

Post by MartinB » Mon Feb 11, 2019 5:54 pm

Nice work Stuart, you never disappoint..... =D> 8)

Regarding User Port conflicts on the Master, Simon (sydney) confronted this problem by adding a second User Port via the Master's internal Econet connector - have a read of the thread here. I produced a special version of UPURS to be compatible with this new second port so in his case, he can use UPURS with other User Port peripherals such as mice or MMC systems. I'm not sure if anyone mass-produced Simon's design (?) but maybe someone could assist you to realise one....?

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hoglet
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Re: Wires? Pah.....

Post by hoglet » Mon Feb 11, 2019 6:05 pm

MartinB wrote:
Mon Feb 11, 2019 5:54 pm
Regarding User Port conflicts on the Master, Simon (sydney) confronted this problem by adding a second User Port via the Master's internal Econet connector - have a read of the thread here. I produced a special version of UPURS to be compatible with this new second port so in his case, he can use UPURS with other User Port peripherals such as mice or MMC systems. I'm not sure if anyone mass-produced Simon's design (?) but maybe someone could assist you to realise one....?
Steve Picton has a couple of these left:
https://www.ebay.co.uk/itm/223335751689
StevePictonUserPort.jpg
Dave

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MartinB
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Re: Wires? Pah.....

Post by MartinB » Mon Feb 11, 2019 7:19 pm

That looks perfect Dave - I see the base address is as per Simon's implementation but with Steve's device not being based on a genuine 6522, I presume it will behave the same on the outside-facing interface down to a microsecond level...? :-k I only ask because as you know, my bit-banged RS232 is asynchronous and so unlike MMC interfaces, it isn't immune to subtle timing differences. Assuming it is directly equivalent to the 6522, it would work out of the box with the UPURS 5.9 version I produced for Simon.

Can you rustle up another £14 Stuart? :wink:

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Re: Wires? Pah.....

Post by danielj » Mon Feb 11, 2019 7:34 pm

If you're going to spend £14, I'd consider the gotek (especially on a Master as it's got the DFS gubbins built in)?

d.

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Re: Wires? Pah.....

Post by hoglet » Mon Feb 11, 2019 7:56 pm

MartinB wrote:
Mon Feb 11, 2019 7:19 pm
That looks perfect Dave - I see the base address is as per Simon's implementation but with Steve's device not being based on a genuine 6522, I presume it will behave the same on the outside-facing interface down to a microsecond level...? :-k I only ask because as you know, my bit-banged RS232 is asynchronous and so unlike MMC interfaces, it isn't immune to subtle timing differences. Assuming it is directly equivalent to the 6522, it would work out of the box with the UPURS 5.9 version I produced for Simon.
Steve's device is based on a genuine 6522 (a WD65C22 to be precise).

But (and this is quite a big but) it's clocked at 2MHz because that's what's available on the Econet header.

So your code would run slightly faster.

Given this, it might be best then to use the internal user port for MMFS rather than UPURS.

Dave

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MartinB
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Re: Wires? Pah.....

Post by MartinB » Mon Feb 11, 2019 8:19 pm

Ah, ok thanks Dave - I confess that I saw the square surface-mount device and glazed over assuming it was a CPLD VIA emulator or something - my bad :)

Regarding the 2MHz clocking with no access slow-down, the 'special' UPURS v5.9 was exactly for that purpose (and at the new base address) because Simon's extra 6522 used the same Econet connector and hence was also clocked at the full 2MHz so I re-adjusted the cycle timing for the higher speed clock rate. Hence my comment about Steve's gadget together with UPURS 5.9 working 'out of the box' (now you've confirmed it's a 6522.)


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Last edited by MartinB on Mon Feb 11, 2019 8:33 pm, edited 2 times in total.

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aerworuld
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Re: Wires? Pah.....

Post by aerworuld » Tue Feb 12, 2019 5:40 am

hehe, don't worry Dave, the Electron is still a happy elk with all systems go, I just always wanted a 128 too ;-)

Thank you Martin; glad you like the piccy lol

With the User Port, I was thinking more of a switcher or similiar as I thnk I would only need to use one or the other, not both at the same time.Just wanted to save wear by plugging and unplugging al the time ;-)

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