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Search: Posts Made By: cmorley
Forum: support.Hardware 16 February 2020, 17:51
Replies: 2
Views: 210
Posted By cmorley
DRA8 is not toggled frequently enough during...

DRA8 is not toggled frequently enough during refresh on the pre 8372 Agnus. You can look at it on an oscilloscope. I think off the top of my head it toggles every half second or every second - can't...
Forum: support.Hardware 09 January 2020, 13:37
Replies: 6
Views: 245
Posted By cmorley
As you had upgraded to an 8372A Agnus so you've...

As you had upgraded to an 8372A Agnus so you've got the key bit from a 6A which is the 1MB Agnus - so I'd expect the chip RAM wire to work on your rev 5. The Amiga would probably crash with a stock...
Forum: support.Hardware 18 November 2019, 15:22
Replies: 13
Views: 515
Posted By cmorley
Topnik 83 is cheap from eBay. Brush on and works...

Topnik 83 is cheap from eBay. Brush on and works well. I mostly use genuine Amtech flux and that is much more expensive but a little nicer to work with.
Forum: Hardware mods 04 November 2019, 11:10
Replies: 39
Views: 5,443
Posted By cmorley
Is the donor RAM known good or sourced from...

Is the donor RAM known good or sourced from China? It could well be you have several bad chips in the batch. I'd take the RAM from a working V2 board and try that on a V3 PCB.

If it is not the RAM...
Forum: Hardware mods 03 November 2019, 17:08
Replies: 39
Views: 5,443
Posted By cmorley
Looks like a faulty memory chip to me. Diagrom...

Looks like a faulty memory chip to me. Diagrom has manual memory edit which you can use to view/edit memory and work out which chip is dead (if you know which chip maps to what memory region). Then...
Forum: Hardware mods 23 September 2019, 15:37
Replies: 518
Views: 123,495
Posted By cmorley
HC508 manual says it is not compatible with Gary...

HC508 manual says it is not compatible with Gary adapter RAM.
http://irixlabs.com/files/HC508%20quick%20start%20guide%20EN.pdf
Forum: Hardware mods 21 September 2019, 23:40
Replies: 518
Views: 123,495
Posted By cmorley
@toadnode: What kickstart do you have on the rev...

@toadnode: What kickstart do you have on the rev 5? Kick 1.2 will crash with a yellow (iirc) screen with Gary adapter RAM I think. Kick 1.3 is fine.
Forum: support.Hardware 21 July 2019, 00:08
Replies: 1
Views: 147
Posted By cmorley
If you make no jumper changes then you would just...

If you make no jumper changes then you would just get 512KB slow RAM. JP2 & _extick mod then you would get 512KB extra chip RAM (with 8372 or later Agnus of course).

You can't get the full 1MB...
Forum: support.Hardware 20 July 2019, 18:21
Replies: 1
Views: 204
Posted By cmorley
No. A500+ takes one 16 bit ROM. A1200 takes two...

No. A500+ takes one 16 bit ROM. A1200 takes two 16 bit ROMs for 32 bits.
Forum: support.Hardware 19 July 2019, 19:20
Replies: 4
Views: 213
Posted By cmorley
Sorry. Read the title & must have glossed over...

Sorry. Read the title & must have glossed over the bit where it isn't a drive issue.
Forum: support.Hardware 19 July 2019, 11:51
Replies: 4
Views: 213
Posted By cmorley
Have you cleaned the drive heads?

Have you cleaned the drive heads?
Forum: support.Hardware 14 July 2019, 13:29
Replies: 15
Views: 588
Posted By cmorley
Yeah rev 6 are common in Europe. I agree A501 +...

Yeah rev 6 are common in Europe. I agree A501 + genuine fast RAM is a good option for an OCS Agnus.

I imagine you can lie to Agnus about the RAMEN line so it does DRAM access in the $20-9F space....
Forum: support.Hardware 14 July 2019, 10:21
Replies: 15
Views: 588
Posted By cmorley
The value is in having chip and slow at the same...

The value is in having chip and slow at the same time - which an A501 can't do. You need manual toggle switches on _EXTICK/JP7A and JP2 to switch between chip & slow.

So have 1MB chip all the time...
Forum: support.Hardware 08 July 2019, 08:50
Replies: 15
Views: 588
Posted By cmorley
Lots of games are hardcoded to use RAM at C00000...

Lots of games are hardcoded to use RAM at C00000 (slow RAM). So most floppy games will never use any fast RAM on an A500 at all.

With chip + slow solution you can load any game which can use 1MB...
Forum: support.Hardware 25 June 2019, 09:35
Replies: 15
Views: 835
Posted By cmorley
The card interfering with the trapdoor doesn't...

The card interfering with the trapdoor doesn't sound good. Flexing PCBs is never ideal and edge connectors are not designed to take sideload.

I bought a 90s A600 chip RAM expansion recently with a...
Forum: support.Hardware 17 June 2019, 10:17
Replies: 15
Views: 588
Posted By cmorley
There are plenty of non-AGA games which will use...

There are plenty of non-AGA games which will use more than 1MB. This is especially true having 1MB chip + slow RAM on an A500. http://eab.abime.net/showthread.php?t=65574

Some like A-Train and...
Forum: support.Hardware 16 June 2019, 20:33
Replies: 15
Views: 588
Posted By cmorley
On an A500 Rev 6 without the chip RAM wire you...

On an A500 Rev 6 without the chip RAM wire you will get +1.5MB slow RAM (2MB total).

If you don't use the Gary adapter you'll only get +0.5MB - same as a normal Commodore A501 memory expansion. In...
Forum: support.Hardware 16 June 2019, 19:27
Replies: 15
Views: 588
Posted By cmorley
Here are the links: ...

Here are the links:

http://www.boobip.com/hardware/A500_2MB
http://eab.abime.net/showthread.php?t=93130

The kit including Gary adapter is £30 + P&P (£2 to UK) just PM me or email me (contact...
Forum: support.Hardware 16 June 2019, 13:22
Replies: 15
Views: 588
Posted By cmorley
Yes there were 1.5MB and 1.8MB trapdoor...

Yes there were 1.5MB and 1.8MB trapdoor expansions back in the day with Gary adapters. They come up on eBay every so often.

I do a modern 2MB one pre-assembled & tested and there is PeteAU's open...
Forum: support.Hardware 12 June 2019, 15:07
Replies: 8
Views: 264
Posted By cmorley
Yes you need the latest TF530 firmware. All...

Yes you need the latest TF530 firmware.

All the TF support is here:

https://www.exxoshost.co.uk/forum/viewforum.php?f=65
Forum: support.Hardware 11 June 2019, 20:28
Replies: 8
Views: 264
Posted By cmorley
Great to hear it is working now. I recommend you...

Great to hear it is working now. I recommend you run a few rounds of Keir's Amiga Test Kit (systest) to check all is working.

As for Lotus 2 you could try that memory config in winuae and see if...
Forum: support.Hardware 11 June 2019, 18:18
Replies: 8
Views: 264
Posted By cmorley
Hi Steve, If JP7A has been cut what is the...

Hi Steve,

If JP7A has been cut what is the setting of JP2 on the A500 motherboard?

For 1.5MB mode (without the chip RAM wire mod installed) JP2 needs to be on the factory position.

Chris
Forum: support.Hardware 06 June 2019, 11:58
Replies: 9
Views: 456
Posted By cmorley
The foam pads are better for some old drives...

The foam pads are better for some old drives which have slits cut in the heads - cotton bud fibres can get stuck in the slit. I don't think that is a problem for any Amiga floppy drives though but...
Forum: support.Hardware 23 April 2019, 13:45
Replies: 11
Views: 532
Posted By cmorley
If it is light green then isn't that CIA? Have...

If it is light green then isn't that CIA? Have you swapped the CIAs or tried known good CIAs?
Forum: support.Hardware 23 April 2019, 10:27
Replies: 4
Views: 352
Posted By cmorley
JP9 on the 8A board (near Gary) determines if it...

JP9 on the 8A board (near Gary) determines if it uses on board RTC or trapdoor RTC.

This is part of the Commodore "sell the same PCB as A500 or A500+" options.

Google "amiga 500+ JP9" or look...
Forum: Hardware mods 21 April 2019, 00:47
Replies: 9
Views: 1,004
Posted By cmorley
Several other users have reported the same setup...

Several other users have reported the same setup works just fine. They are compatible upgrades.
Forum: Hardware mods 10 April 2019, 19:18
Replies: 7
Views: 1,123
Posted By cmorley
Yes exactly as you explain jbilander. ...

Yes exactly as you explain jbilander.


Lifting that pin is not easy not least because the SIP resistor pack is mm away but it can be done with the correct tools and skill. :) Pin might snap if...
Forum: support.Hardware 31 March 2019, 21:36
Replies: 5
Views: 311
Posted By cmorley
Yes you could add an RTC with no slow RAM on the...

Yes you could add an RTC with no slow RAM on the trapdoor port.


I looked at RM550c-f on google and the pictures have the RAM in sockets. If your RAM is socketed you could try just removing the...
Forum: Hardware mods 26 February 2019, 16:14
Replies: 7
Views: 1,123
Posted By cmorley
I understand your point of view. My rev 3 A500 is...

I understand your point of view. My rev 3 A500 is totally original :)


You can do the A500+ mod for my RAM with lifting a pin instead of cutting a track so it is reversible. :)
Forum: Hardware mods 26 February 2019, 12:46
Replies: 7
Views: 1,123
Posted By cmorley
Hi Stephan, If it is an 8A but with only...

Hi Stephan,


If it is an 8A but with only 512K then follow the A500 instructions. JP2 is in a slightly different place on all the models (3, 5, 6A, 8A) but the function is identical.


You can...
Forum: support.Hardware 18 February 2019, 14:13
Replies: 9
Views: 639
Posted By cmorley
I make and sell the 2MB one you link. ...

I make and sell the 2MB one you link.


There is also PeteAU's open source design if you want to assemble your own http://eab.abime.net/showthread.php?t=85395


Lots of vintage ones come up on...
Forum: support.Hardware 27 November 2018, 23:04
Replies: 7
Views: 560
Posted By cmorley
I am the seller & I support all my gear. Contact...

I am the seller & I support all my gear. Contact me directly the email address is on the website and I can help you.
Forum: Hardware mods 16 October 2018, 10:20
Replies: 19
Views: 4,262
Posted By cmorley
I honestly don't know as I don't have a TF530. I...

I honestly don't know as I don't have a TF530. I know plasmab has spent a huge amount of effort to make the TF boards compatible with other hardware.


Buyers have confirmed it working with the...
Forum: Hardware pics 29 September 2018, 15:12
Replies: 3
Views: 4,337
Posted By cmorley
I had an Acorn A3000 keyboard membrane which...

I had an Acorn A3000 keyboard membrane which battery leakage had damaged the traces on the flexi at the connector. The connector was completely ruined.


After reading the OP I tried a repair with...
Forum: Hardware mods 26 September 2018, 18:21
Replies: 4,059
Views: 428,241
Posted By cmorley
I use Elecrow regularly. I would recommend them...

I use Elecrow regularly. I would recommend them to anyone.
Forum: Hardware mods 24 September 2018, 15:21
Replies: 19
Views: 4,262
Posted By cmorley
I don't stock the RTC chips. I can't compete on...

I don't stock the RTC chips. I can't compete on price with the eBay sellers. The B spec chip can often be bought for less than €2.
Forum: Hardware mods 23 September 2018, 12:11
Replies: 19
Views: 4,262
Posted By cmorley
My solution needs a track cut/pin lift and 2 fly...

My solution needs a track cut/pin lift and 2 fly leads soldering if you want the A500+ slow RAM option - so not perfect.

If you want one you can PM me or email me (contact on the website). I...
Forum: Hardware mods 22 September 2018, 01:17
Replies: 19
Views: 4,262
Posted By cmorley
Yes it works well in an A500+. You need the Gary...

Yes it works well in an A500+. You need the Gary adapter and the wire mods to get slow RAM on the A500+.

The result is 2MB chip + 1MB slow :)
Forum: Hardware mods 06 August 2018, 13:20
Replies: 13
Views: 2,308
Posted By cmorley
The A500+ and A600 Agnus have different pinout to...

The A500+ and A600 Agnus have different pinout to the A500 (rev 6A) Agnus. I could have worded that differently.



I don't think you can use any 8375, the JPG specifies 318069-19 or 318069-03
...
Forum: Hardware mods 06 August 2018, 12:32
Replies: 13
Views: 2,308
Posted By cmorley
Yeah that is what I though. Guides already exist....

Yeah that is what I though. Guides already exist.



I was asked by someone.



The A500+ and A600 8375 have different pinouts. It does have to be an A3000 Agnus as is mentioned in the JPG...
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