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View Full Version : For Sale New 2MB RAM upgrade for Amiga 500 & 500+



cmorley
22nd June 2018, 07:47
Hello All,

I've just release my new 2MB trapdoor expansion for the Amiga 500 & Amiga 500+. It has a memory board and a Gary adapter (for extra address signals).

I own and have tested it in:
Amiga 500 Rev 3, 5 and 6A
Amiga 500+ Rev 8A


Confirmed works with:
Wicher 500i, 2MB MegAChip

Without the Gary adapter the board will act like a Commodore A501 or A501+. i.e. 0.5MB slow in an A500 and 1MB chip on an A500+. The Gary adapter is needed to access more of the memory.

It also has a socket for a Real Time Clock (RTC) & clock battery chip for Amiga 500. RTC is Epson 72421A (or 72421B less accurate and slightly cheaper) and battery is standard CR2032 coin cell. These are still manufactured and easy to obtain if you want one.

Please note:
A500: Kickstart 1.3 or later is required for the Gary adapter (it won't boot with 1.5MB slow RAM with Kick 1.2)
A500: A 1MB/ECS Agnus is needed to do the chip RAM mod (to get 1MB chip RAM & 1.5MB slow RAM)
A500+: Unless you do the chip RAM mod then you don't need/fit the Gary adapter
A500/A500+: For maximum memory you need to solder some jumper wires. Only attempt modification if you have the right tools and are confident in working on your Amiga.

Full details are on the website including installation instructions and chip RAM mod details.
http://www.boobip.com/hardware/A500_2MB

Please ask if you have any questions or an unusual setup.

Memory board, Gary adapter & link wire:
136647

More photos on the website including pictures of it installed in A500 and A500+.

2MB memory PCB - 25
Gary Adapter and cable - 5
+ P&P from 2 UK, 4.15 EU, 4.80-4.95 World

Current stock is blue PCBs.

Available elsewhere.

Chris

cmorley
6th July 2018, 11:20
2wk bump. Still some green boards left. New batch of blue 10+ available.

Ali500
6th July 2018, 13:49
I'd be interested in one of these for my A500+ pending some questions.

I'll send you a PM.

cmorley
10th July 2018, 10:49
Ali500: Payment received & KIT posted. Thanks!

bkodenkt
10th July 2018, 14:54
Pending questions regarding already existing 1MB Chip-RAM mod.

EDIT: Got my question answered by simply writing them down and thus thinking about them in detail.

cmorley
31st July 2018, 11:32
Bump. Still in stock.

cmorley
20th August 2018, 10:53
Bump. Still in stock. Only 2 green kits left though, plenty of blue.

WonkeyDonkey
30th August 2018, 22:01
What is C6 for ?

Thanks.

cmorley
30th August 2018, 22:34
What is C6 for ?


C6 is not used. Spare holes in case I needed bulk capacitance.

C7 is for A500 rev 3 compatibility.

WonkeyDonkey
30th August 2018, 22:41
What is C6 for ?


C6 is not used. Spare holes in case I needed bulk capacitance.

C7 is for A500 rev 3 compatibility.

Thanks.

Declaring interest and sending PM.

(Nice to see the designer actively providing support on here, and the good level of documentation available).

;)

cmorley
31st August 2018, 09:34
WonkeyDonkey: Payment received and item posted. Thanks

kirk_m
31st August 2018, 14:37
I didn't buy mine here, but, can confirm it works nicely in my Rev6A with Wicher500i and 2MB megachip expansion. Chris was great with support in getting it to work with the Megachip + the Gary Adapter.

WonkeyDonkey
1st September 2018, 10:51
Received in the post this morning. Feedback left :)

cmorley
15th September 2018, 19:39
bump.

roc
16th September 2018, 07:27
Expressing interest in one full set (Expansion plus Gary adapter). If available, green but blue would be okay too.

PM Sent

roc
16th September 2018, 10:13
Expressing interest in one full set (Expansion plus Gary adapter). If available, green but blue would be okay too.

PM Sent

Payment sent

cmorley
16th September 2018, 11:16
roc:
Payment received and item posted. Thanks

zJark
16th September 2018, 18:47
Hi.
I bought this from eBay last week. I have not received it yet, but couple of questions for future. I found old RM-550C from trapdoor of my a500. My plan is recycle ram and rtc chips. So can i use old RTC (OKI M6242B) in your board?
-Jarkki

cmorley
16th September 2018, 19:04
Hi.
So can i use old RTC (OKI M6242B) in your board?
-Jarkki

No, you need to use RTC72421A or RTC72421B which have an internal clock crystal. M6242B needs an external crystal and other components on the board as well. They are not compatible ICs.

RTC72421A is a little more accurate than RTC72421B.

zJark
16th September 2018, 20:03
Hi.
So can i use old RTC (OKI M6242B) in your board?
-Jarkki

No, you need to use RTC72421A or RTC72421B which have an internal clock crystal. M6242B needs an external crystal and other components on the board as well. They are not compatible ICs.

RTC72421A is a little more accurate than RTC72421B.

Oh Ok. Thanks. Allmost forgot that another question. I have that stripped a500+ board in my a500. If i want that full 2meg i need to install missing ram chips and that logic chip in MB. I install sockets so it is easy change chips if something goes kaboom.
Ram chips in MB are hyb514256b-70 .... Now in that old trapdoor expansion i have hy51c4256s-10 chips. can i use them in my mb.
Quick googling tells me that difference is access time 70ns vs 100ns . Is that a problem?
-Jarkki

cmorley
16th September 2018, 20:24
You should be able to use the 100ns chips. They worked in the trapdoor expansion after all :)

ori1a
16th September 2018, 21:03
Can this extension somehow work as +1MB chip extension (1MB+1MB CHIP) without slow/ranger ram and without MB reworks?

cmorley
16th September 2018, 21:54
Can this extension somehow work as +1MB chip extension (1MB+1MB CHIP) without slow/ranger ram and without MB reworks?

On an A500+ yes.

ori1a
18th September 2018, 21:15
Can this extension somehow work as +1MB chip extension (1MB+1MB CHIP) without slow/ranger ram and without MB reworks?

On an A500+ yes.I'm interested in full set.

Wysłane z mojego ASUS_Z00AD przy użyciu Tapatalka

cmorley
18th September 2018, 22:07
Can this extension somehow work as +1MB chip extension (1MB+1MB CHIP) without slow/ranger ram and without MB reworks?

On an A500+ yes.I'm interested in full set.

Wysłane z mojego ASUS_Z00AD przy użyciu Tapatalka


If you have A500+ and do not want ranger RAM then you must not fit the Gary adapter. Memory card only on A500+ for 1MB + 1MB chip. Save 5 & don't buy the Gary adapter unless you want 2MB chip + 1MB slow on A500+.

ori1a
19th September 2018, 06:33
Payment for full setup sent.
Will start with chip mem.
I also have another (broken - chip mem error) A500+ and want try to use this extension mem as 2MB chip using gary:-)

Wysłane z mojego ASUS_Z00AD przy użyciu Tapatalka

cmorley
19th September 2018, 06:50
ori1a: Payment received and item posted. Thanks




I also have another (broken - chip mem error) A500+ and want try to use this extension mem as 2MB chip using gary
:smile:

Ahh OK. That isn't possible without special modification of the A500+. You'd need to disable RAS or CAS to the motherboard memory... easier to repair the fault I think!

ori1a
4th October 2018, 14:46
Card received and working.
Positive feedback left.

cmorley
4th October 2018, 15:16
Card received and working.
Positive feedback left.

:thumbsup:
Good to hear. Feedback left. Thanks!

Epongette
4th October 2018, 20:45
Hi, declaring interest for 2MB memory PCB - 25 if any left

cmorley
5th October 2018, 20:35
Hi Epongette. Yes I have stock. I'll PM you.

Epongette
6th October 2018, 14:28
Hi Epongette. Yes I have stock. I'll PM you.

Money sent, thanks

cmorley
6th October 2018, 14:55
epongette: Money received thanks. PM me with address details please :)

roc
8th October 2018, 17:51
Expressing interest in one full set (Expansion plus Gary adapter). If available, green but blue would be okay too.

PM Sent

Payment sent

The expansion has arrived and works like a champ on my A500+. Positive feedback released and thank you

cmorley
8th October 2018, 18:08
The expansion has arrived and works like a champ on my A500+. Positive feedback released and thank you

That's great to hear, thanks. Feedback left.

Sotos
9th October 2018, 10:15
Interest in 2mb board and Gary adapter if still available?

cmorley
9th October 2018, 15:38
Hello Sotos. Yes I have stock of the blue boards. PM sent.

Sotos
10th October 2018, 13:03
Payment sent.

cmorley
10th October 2018, 15:52
Sotos: Payment received thanks. Item sent.

cvtof
15th October 2018, 09:06
Interest in 2mb board and Gary adapter if still available ?, to France.

thank you !

cmorley
15th October 2018, 09:17
cvtof: Yes I have stock. I will PM you.

cmorley
15th October 2018, 11:10
cvtof: Payment received, item posted. Many thanks!

ori1a
4th December 2018, 14:27
Card received and working.
Positive feedback left.

[emoji106]
Good to hear. Feedback left. Thanks!Hi,
I am interested in one more card. This time without Gary adapter.


Wysłane z mojego ASUS_Z00AD przy użyciu Tapatalka

cmorley
4th December 2018, 15:38
No problem I have stock. I will PM you.

ori1a
4th December 2018, 19:49
No problem I have stock. I will PM you.Payment done. PM replied.


Wysłane z mojego ASUS_Z00AD przy użyciu Tapatalka

cmorley
5th December 2018, 10:10
ori1a: Payment received and item posted. Thanks

powaking
14th December 2018, 15:47
Inquiring if still in stock as I am declaring interest with Gary adapter.

cmorley
14th December 2018, 16:18
Inquiring if still in stock as I am declaring interest with Gary adapter.

Hi, yes I have stock of the memory board & the Gary adapter. I will PM you.

cmorley
14th December 2018, 17:18
powaking: Payment received and item posted. Thanks

ori1a
18th December 2018, 21:21
Safely arrived. Thanks.
( I will use it after Xmas.)

Wysłane z mojego ASUS_Z00AD przy użyciu Tapatalka

webmany
19th December 2018, 05:18
Would this work on a a1000?

cmorley
19th December 2018, 07:46
Safely arrived. Thanks.
( I will use it after Xmas.)


Good to hear. Enjoy your Amigas :)

ori1a: Feedback left.

- - - Updated - - -


Would this work on a a1000?

No sorry this is trapdoor memory for an A500/A500+. I think the A1000 has a different memory expansion connector/interface.

powaking
24th December 2018, 20:34
Arrived today but won’t get around to installing it until after Christmas.

moebius-rising
25th December 2018, 00:50
I'd like one! I'll pm you shipping destination info.

cmorley
9th January 2019, 14:55
I'd like one! I'll pm you shipping destination info.

They're in stock. Awaiting payment.

radiokida
9th January 2019, 15:39
Would this work alongside the TF530?

cmorley
9th January 2019, 18:54
Would this work alongside the TF530?

Yes but you will need the very latest TF530 firmware. See this EAB thread: http://eab.abime.net/showthread.php?t=95328

radiokida
10th January 2019, 09:41
Ok, how about the upcoming TF534? I know it's not out yet, but wondering if the specs of it means it will work ok?

cmorley
10th January 2019, 12:43
Ok, how about the upcoming TF534? I know it's not out yet, but wondering if the specs of it means it will work ok?

I expect it will but can't guarantee it. IIRC Stephen (terriblefire) fixed the problem with >1MB slow RAM on the TF534 and backported that change to the TF530 but I might be misremembering that. You'd have to ask on the exxos forum for confirmation.

Jiffy
11th January 2019, 07:48
Interested in RAM-card and Gary adapter plus cable.

Edit: payment sent!

cmorley
11th January 2019, 09:58
Jiffy: Payment received, item posted. Many thanks!

guybrush
18th January 2019, 10:13
Interested in one without Gary adapter.

cmorley
18th January 2019, 10:24
Interested in one without Gary adapter.

No problem. I have stock. I will PM you.

guybrush: Payment received, item posted. Many thanks!

Jiffy
19th January 2019, 16:35
Card arrived yesterday. Going to install it in a week or two.

Tnx again & feedback left! :-)

cmorley
19th January 2019, 19:26
Splendid, great to hear. Let me know if you have any questions at all.

Tumi81
19th January 2019, 20:50
Hi,

Interested in one, without gary adapter and shipped to Finland. :)

cmorley
20th January 2019, 17:58
Interested in one, without gary adapter and shipped to Finland. :)

No problem I have stock. PM sent.

Tumi81: Payment received, item posted. Many thanks!

Lord
22nd January 2019, 21:49
Interested in one, with gary adapter and shipped to germany :-)

Lord
23rd January 2019, 18:45
Payment send

cmorley
24th January 2019, 08:29
Lord: Payment received, item posted. Many thanks!

radiokida
28th January 2019, 11:09
Hi

Bought the 2MB Amiga upgrade from your website. I got the RAM card working on its own, but not with the Gary adapter or the jumper wires.

With the RAM expansion in place but nothing else the Amiga 500+ works fine.

If I fit the Gary adapter and hook it up to the RAM board. I get a grey screen, it then goes lighter grey briefly and I can see what looks like "loading flashing" around the screen, only lasts a second (hard to explain but it looks a bit like when a cracked amiga game is loading, or like the old spectrum tape games would load with colours in the background).

If I hook everything up, RAM, Gary adapter and do the mod with the two jumper leads then I get a yellow screen, and it gets no further.

Any ideas?

cmorley
28th January 2019, 12:21
Hi radiokida,

An A500+ won't boot with the Gary adapter without the mod wires - that is normal.

I've seen a yellow screen when the 8 pin wire between the boards is making a bad connection. Please check none of the recepticals have "pushed back" in the connector housing and aren't making contact on the pins.

You can also test continuity from board to board with a multimeter.

Please email me direct and send me some close up photos of the connections and the mod.

Chris

radiokida
28th January 2019, 13:54
Ok, thanks for the quick response. I'll take some pics later this evening. Actually, I think some of the connectors were quite easily pushing back, so I will give it another try as well and check for continuity like you suggest.

Tumi81
31st January 2019, 18:21
Interested in one, without gary adapter and shipped to Finland. :)

No problem I have stock. PM sent.

Tumi81: Payment received, item posted. Many thanks!
Package received, positive feedback left. Thanks! :)

cmorley
31st January 2019, 18:42
Package received, positive feedback left. Thanks! :)

Good to hear. Feedback left. Enjoy!

Bytestorm
13th February 2019, 09:03
Thinking about buying a couple of these, but can anyone confirm that they work together with ACA500plus on a standard a500?

Thanks!

cmorley
13th February 2019, 19:28
No I don't recommend it with an ACA500plus. The ACA500plus says don't use Gary adapter RAM...

I recently bought the ACA500plus and tested it.
Kick 1.3 : Works but only 1MB slow RAM
Kick 3.1 : Works but only 1MB slow RAM
Kick 3.1.4 : Doesn't work

If you don't use the Gary adapter then it is fine.

Bytestorm
14th February 2019, 09:21
No I don't recommend it with an ACA500plus. The ACA500plus says don't use Gary adapter RAM...

I recently bought the ACA500plus and tested it.
Kick 1.3 : Works but only 1MB slow RAM
Kick 3.1 : Works but only 1MB slow RAM
Kick 3.1.4 : Doesn't work

If you don't use the Gary adapter then it is fine.

oh snap.. but how about the Wicher 500i? On the first page it says it works but maybe not tested together with gary adapter?

cmorley
14th February 2019, 09:38
I don't own a Wicher 500i but a couple of buyers have them. They say the memory + Gary adapter works fine with the Wicher card. :)