2 mb chip ram for A600 - Page 2

Zetr0 · 16 June 2008, 21:57

Just an update, heres the Hack i did on my A600.... i took some dodgy pics

I need to update this, BUT it will stand for the moment

How to do it

[edit]

okay thats the quick guide, I will put up a step by step how to....

alexh · 16 June 2008, 22:21

256k*16 = 4096 MBit not 4096 Kbyte

Akira · 16 June 2008, 22:26

That looks like a mighty nice mod! Very clean and leaves your trapdooor ready for other expansions, like an accelerator. Good one!

alexh · 16 June 2008, 22:28

The A600 trapdoor edge connector doesnt have the signals for an accelerator, but you could make a clock port adapter. (Kinda like the one on the A602 from Jens Schoenfeld)

Akira · 16 June 2008, 22:29

Oh you are right.
But doesn't the A600 have a clockport as well?
I am so confused, haven't opened mine in years :P

alexh · 16 June 2008, 22:30

A600 doesnt have a clock port.

Zetr0 · 16 June 2008, 22:36

Quote:

Originally Posted by alexh

256k*16 = 4096 MBit not 4096 Kbyte

yeah yeah..... its a fair cop!

i need to update it.

rkauer · 16 June 2008, 22:40

Just a tip for everyone who wants to create A600's trapdoor devices: the peecee PCI slot have the same pin space of the old A600 trapdoor's edge (albeit a little longer). If you have a peecee mobo around, it is simple to unsolder one PCI slot to use on your own hackery!

Hungry Horace · 16 June 2008, 22:42

bagh! cant find any compatible chips in my collection!

Zetr0 · 16 June 2008, 22:45

@HH

....sigh.... do you READ those lovingly crafted PM's i sent you.... not just the ones with the extra kisses....

I have a set already with 30AWG wire just needs plonking on and Soldering.... I said... you could have them for postage.....

now.... no more kissy PM's without flowers first....

shessh..... specky fanboi's i tell ya.....

Hungry Horace · 16 June 2008, 22:48

i guess my speccy eyes were paying to much attenetion to all the kisses and PDF links to notice!

DoogUK · 19 June 2008, 22:27

I'm looking at doing this mod but there's one bit i dont understand.

Do you solder wires to pins 28 & 29 on both ram chips? and if so why are there only 2 wires coming out.

Sorry for noobiness

Zetr0 · 19 June 2008, 22:36

pins 28 of each chip are connected together, pins 29 of each chip are connected, there are 4 wires total, 2 from each chip.

in the picture, there are two wires from each chip to a simple bit of perf board, and then one wire from that to the mobo.

I have since re-done this using 30Awg wire, which i had none of before, just need to update the pics.

DoogUK · 19 June 2008, 22:40

Ahhh thankyou grandmaster hackery....i went through the german pages and couldn't figure it.

I'm going to do this mod.

Merlin · 19 June 2008, 22:47

@ Doog

That's why Zet and I translated it....

DoogUK · 19 June 2008, 22:55

@Merlin....i know and muchly appreciated mate...but i couldnt get the clear picture.

Killed too many brain cells i think.

My a600 board is a rev 1 and marked as an a300 ...will this still work on this board as the instructions i think were for a rev 2.

Magno Boots · 21 July 2008, 00:02

Just to clarify an earlier post.

I blindly purchased six S3 Trio cards off Ebay and found that the chips are not compatible with the A600 upgrade

.

Attachment 17239

Are these of use to anyone before they go in the bin?

cosmicfrog · 21 July 2008, 01:28

hey mango how about posting them on Amibay or the place i just found OldSkool UK
just been readin up on zetro`s explotis there
prob go through me bits this week and see what chips are on the old gfx cards i have
see if and A600 user can er use them

Zetr0 · 21 July 2008, 01:33

@magno

my friend i think i might have a little project comming up that could use some of them so yep, and i shall send you some compatible A600 memory chips already prepped in return

PM deets

Zetr0 · 21 July 2008, 01:41

@cosmicfrog

I HAVE A FAN

*heheh*

rkauer · 21 July 2008, 03:57

Quote:

Originally Posted by Magno Boots

Just to clarify an earlier post.

I blindly purchased six S3 Trio cards off Ebay and found that the chips are not compatible with the A600 upgrade

.

Are these of use to anyone before they go in the bin?

Those S3 cards are useful for people who have the MediTator busboard! If those ppl don't have a Voodoo, of course.

alexh · 26 August 2008, 15:01

Hey Zetro,

The upgrade is supposed to be 1Mbyte right?

A600 has 16-bit wide data bus right?

There are two chips per Mbyte right?

Total 4 chips (the original two plus the new two?) giving 2Mbytes right??

If that is right then each must be chip must be 8-bit wide (not 16-bit) and each must be 512K x 8 (not 256K x 16) right?

If so the diagram in your tutorial PDF is wrong.

Also all the RAM chips you've listed are definitely wrong (they are 256K x 4 !!)

I recommend you remove your tutorial until you can fix it.

Edit: Looking at the German page they have posted an updated the parts list (looks like you copied it without checking

)

Edit 2 : I guess they could be 256x16 chips afterall.

Eclipse · 26 August 2008, 15:24

Have a link for the updated parts list?

Zetr0 · 26 August 2008, 15:44

@Alexh

there 256*16 m8y. and yes i double checked before use, and downloaded the specification from AllDataSheets.com

I do need to update the PDF for a couple of typo's and add some more images

@Eclipse

I can send you a nice set of pre-soldered and 30AWG wired chips, all you need to do is put them in place and solder the for wires in place to two points on the board.

including postage say £5 ?

you could do it cheaper possibly by getting a cheap ISA graphics card from eBay or storage and rob the chips of that.

PM me if you want some chips

Eclipse · 26 August 2008, 15:54

Damn, I have some HY514264B's lying around but I doubt I could use them for this

Zetr0 · 26 August 2008, 16:00

Hmmmm

can you post a pic m8y, the xx51428x-xx, could be compatible.

Eclipse · 26 August 2008, 16:04

Here's a data sheet, need to charge the batteries for my camera.
Click
I also have HY514260B's as well.

Zetr0 · 26 August 2008, 16:13

Awesome, I couldn't find that explicit data-sheet, but since you have, yep that will do fine!!!

alexh · 26 August 2008, 16:20

Quote:

Originally Posted by Zetr0

@Alexh
yes i double checked before use, and downloaded the specification from AllDataSheets.com

It does not look like you did.

From your Tutorial / schematic:
Micron MT4C4256 = 256k x 4 (NOT COMPATIBLE)
Hitachi HM514256 = 256k x 4 (NOT COMPATIBLE)
Fujitsu MB81C4256 = 256k x 4 (NOT COMPATIBLE)
I could go on.

All the parts mentioned in yours & Merlin's PDF/schematic are not 256K x 16 but are 256K x 4 and so are probably not compatible?

Eclipse · 26 August 2008, 16:32

Quote:

Originally Posted by alexh

It does not look like you did.

From your Tutorial / schematic:
Micron MT4C4256 = 256k x 4 (NOT COMPATIBLE)
Hitachi HM514256 = 256k x 4 (NOT COMPATIBLE)
Fujitsu MB81C4256 = 256k x 4 (NOT COMPATIBLE)
I could go on.

All the parts mentioned in yours & Merlin's PDF/schematic are not 256K x 16 but are 256K x 4 and so are probably not compatible?

Wouldn't that be 512Kb?

alexh · 26 August 2008, 16:35

256K * 4 = 1024 K-bit or 128 K-bytes per chip

256K * 16 = 4096 K-bit or 512 K-bytes per chip (4 chips = 2Mbytes)

Eclipse · 26 August 2008, 16:39

Quote:

Originally Posted by alexh

256K * 4 = 1024K bit or 128Kbytes each

I meant in total if you had 4 of those.

256K*4*4/8=512Kbytes.
Edit: Same conclusion anyway.

Arnie · 26 August 2008, 18:13

Would it be possible to change the two onboard 512 chips with two 1mb chips

alexh · 26 August 2008, 22:02

I doubt the pinout of 1Mbyte chips would work. They are probably 1-pin (per side) more. It depends on the pin layout.

Eclipse · 28 August 2008, 22:00

Hi,
Zetr0, have you successfully done the mod as I'd like to give it a go sometime.
Thanks for the guide anyway I appreciate how much effort people put into these things.

Magno Boots · 28 August 2008, 22:54

Eclipse,

Zetr0 has confirmed that he has successfully completed the mod

and has kindly provided me with the chips to do one of my own.

Just waiting on confirmation of what pins actually need to be soldered (nudge nudge

)

Magno

Zetr0 · 28 August 2008, 23:25

sorry guys...

taking some nice new pics right now

Magno Boots · 21 December 2008, 22:12

Not had any luck with this mod at all guys.

I've tried four different types of chips with no joy at all - green screen, yellow screen, light grey screen and no difference at all!

One pair came from an old 1200 mb, but still no go.

All look the same as the 600's but I have no way of telling if they're compatible or not.

So, two questions..

What's the highest temperature I should be using to remove the chips from a graphics card with hot air?

Does anyone have two known compatible pairs to sell (as my mb is now flashing green with mod removed)

Edit: The board being worked on is a a300 rev.1 - type one.

Regards
Magno

FOL · 21 December 2008, 23:51

Quote:

Originally Posted by Magno Boots

Not had any luck with this mod at all guys.

I've tried four different types of chips with no joy at all - green screen, yellow screen, light grey screen and no difference at all!

One pair came from an old 1200 mb, but still no go.

All look the same as the 600's but I have no way of telling if they're compatible or not.

So, two questions..

What's the highest temperature I should be using to remove the chips from a graphics card with hot air?

Does anyone have two known compatible pairs to sell (as my mb is now flashing green with mod removed)

Edit: The board being worked on is a a300 rev.1 - type one.

Regards
Magno

Power light flashing?

If so, must have a short on the ic's or a pin not connected. I had a flashing green power light, when 1 pin wasnt connected.

22 December 2008, 01:40

Hi,
i don't want to start a new thread...
in aminet is a hardware hack.. with this hack you can use 72pin ram to build your own card to get 2mb chip in a600 .

16 June 2008, 21:57	#41
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 38 Posts: 9,185	Just an update, heres the Hack i did on my A600.... i took some dodgy pics I need to update this, BUT it will stand for the moment How to do it [edit] okay thats the quick guide, I will put up a step by step how to.... __________________ Luscious Linkie Time:- www.AmiBay.com Old Skooler

16 June 2008, 22:21	#42
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 10,506	256k*16 = 4096 MBit not 4096 Kbyte __________________ Thalion Webshrine

16 June 2008, 22:28	#44
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 10,506	The A600 trapdoor edge connector doesnt have the signals for an accelerator, but you could make a clock port adapter. (Kinda like the one on the A602 from Jens Schoenfeld) __________________ Thalion Webshrine

16 June 2008, 22:30	#46
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 10,506	A600 doesnt have a clock port. __________________ Thalion Webshrine

16 June 2008, 22:40	#48
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 47 Posts: 3,477	Just a tip for everyone who wants to create A600's trapdoor devices: the peecee PCI slot have the same pin space of the old A600 trapdoor's edge (albeit a little longer). If you have a peecee mobo around, it is simple to unsolder one PCI slot to use on your own hackery! __________________ Amigan since 1989 Known drunk since 1982 (don't know quite well, I was drunk) 13 Amigas at home Finally a Z3 one! I'll stick with 'Cachaça do Inter' for this week: Chivas gives headaches! :D Last edited by rkauer; 17 June 2008 at 03:27. Reason: correcting a typo

16 June 2008, 22:26	#43
Akira Registered User Join Date: May 2001 Location: # Posts: 12,584	That looks like a mighty nice mod! Very clean and leaves your trapdooor ready for other expansions, like an accelerator. Good one!

16 June 2008, 22:29	#45
Akira Registered User Join Date: May 2001 Location: # Posts: 12,584	Oh you are right. But doesn't the A600 have a clockport as well? I am so confused, haven't opened mine in years :P

16 June 2008, 22:45	#50
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 38 Posts: 9,185	@HH ....sigh.... do you READ those lovingly crafted PM's i sent you.... not just the ones with the extra kisses.... I have a set already with 30AWG wire just needs plonking on and Soldering.... I said... you could have them for postage..... now.... no more kissy PM's without flowers first.... shessh..... specky fanboi's i tell ya..... __________________ Luscious Linkie Time:- www.AmiBay.com Old Skooler

19 June 2008, 22:27	#52
DoogUK Doogster Join Date: Dec 2007 Location: Dorset Posts: 1,069	I'm looking at doing this mod but there's one bit i dont understand. Do you solder wires to pins 28 & 29 on both ram chips? and if so why are there only 2 wires coming out. Sorry for noobiness __________________ A1200 PowerTower/Apollo 1260-80mhz/64mb/Voodoo3/SB128/20gb IDE/ClassicWB 3.9 Beta

19 June 2008, 22:36	#53
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 38 Posts: 9,185	pins 28 of each chip are connected together, pins 29 of each chip are connected, there are 4 wires total, 2 from each chip. in the picture, there are two wires from each chip to a simple bit of perf board, and then one wire from that to the mobo. I have since re-done this using 30Awg wire, which i had none of before, just need to update the pics. __________________ Luscious Linkie Time:- www.AmiBay.com Old Skooler

19 June 2008, 22:40	#54
DoogUK Doogster Join Date: Dec 2007 Location: Dorset Posts: 1,069	Ahhh thankyou grandmaster hackery....i went through the german pages and couldn't figure it. I'm going to do this mod. __________________ A1200 PowerTower/Apollo 1260-80mhz/64mb/Voodoo3/SB128/20gb IDE/ClassicWB 3.9 Beta

19 June 2008, 22:47	#55
Merlin AmiBay MegaMod Join Date: Mar 2007 Location: Manchester, UK Age: 51 Posts: 1,122	@ Doog That's why Zet and I translated it....

19 June 2008, 22:55	#56
DoogUK Doogster Join Date: Dec 2007 Location: Dorset Posts: 1,069	@Merlin....i know and muchly appreciated mate...but i couldnt get the clear picture. Killed too many brain cells i think. My a600 board is a rev 1 and marked as an a300 ...will this still work on this board as the instructions i think were for a rev 2. __________________ A1200 PowerTower/Apollo 1260-80mhz/64mb/Voodoo3/SB128/20gb IDE/ClassicWB 3.9 Beta

21 July 2008, 00:02	#57
Magno Boots Zone Friend Join Date: Feb 2006 Location: Hertfordshire Posts: 680	Just to clarify an earlier post. I blindly purchased six S3 Trio cards off Ebay and found that the chips are not compatible with the A600 upgrade . Attachment 17239 Are these of use to anyone before they go in the bin? Last edited by Magno Boots; 17 September 2008 at 23:04.

21 July 2008, 01:28	#58
cosmicfrog The 1 who ribbits Join Date: Apr 2006 Location: leek, Staffs, UK Age: 45 Posts: 3,552	hey mango how about posting them on Amibay or the place i just found OldSkool UK just been readin up on zetro`s explotis there prob go through me bits this week and see what chips are on the old gfx cards i have see if and A600 user can er use them __________________ When in dought RIBBIT .... If it dos`t work hit it with a hammer, if that dos`t work get a bigger hammer.......... Have U scen my sanity Pill`s . . . . . . . . . . . . . . // *This Years Software on Last Years Hardware \\//-- Amiga* --**

21 July 2008, 01:33	#59
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 38 Posts: 9,185	@magno my friend i think i might have a little project comming up that could use some of them so yep, and i shall send you some compatible A600 memory chips already prepped in return PM deets __________________ Luscious Linkie Time:- www.AmiBay.com Old Skooler

21 July 2008, 01:41	#60
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 38 Posts: 9,185	@cosmicfrog I HAVE A FAN heheh __________________ Luscious Linkie Time:- www.AmiBay.com Old Skooler

26 August 2008, 15:01	#62
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 10,506	Hey Zetro, The upgrade is supposed to be 1Mbyte right? A600 has 16-bit wide data bus right? There are two chips per Mbyte right? Total 4 chips (the original two plus the new two?) giving 2Mbytes right?? If that is right then each must be chip must be 8-bit wide (not 16-bit) and each must be 512K x 8 (not 256K x 16) right? If so the diagram in your tutorial PDF is wrong. Also all the RAM chips you've listed are definitely wrong (they are 256K x 4 !!) I recommend you remove your tutorial until you can fix it. Edit: Looking at the German page they have posted an updated the parts list (looks like you copied it without checking ) Edit 2 : I guess they could be 256x16 chips afterall. __________________ Thalion Webshrine Last edited by alexh; 26 August 2008 at 15:23.

26 August 2008, 15:24	#63
Eclipse Turpentine Join Date: Oct 2007 Location: Kent, United Kingdom Posts: 739	Have a link for the updated parts list?

26 August 2008, 15:44	#64
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 38 Posts: 9,185	@Alexh there 25616 m8y. and yes i double checked before use, and downloaded the specification from AllDataSheets.com I do need to update the PDF for a couple of typo's and add some more images @Eclipse I can send you a nice set of pre-soldered and 30AWG wired chips, all you need to do is put them in place and solder the for wires in place to two points on the board. including postage say £5 ? you could do it cheaper possibly by getting a cheap ISA graphics card from eBay or storage and rob the chips of that. PM me if you want some chips __________________ Luscious Linkie Time:- www.AmiBay.com Old Skooler Last edited by Zetr0; 26 August 2008 at 15:55.*

26 August 2008, 15:54	#65
Eclipse Turpentine Join Date: Oct 2007 Location: Kent, United Kingdom Posts: 739	Damn, I have some HY514264B's lying around but I doubt I could use them for this

26 August 2008, 16:00	#66
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 38 Posts: 9,185	Hmmmm can you post a pic m8y, the xx51428x-xx, could be compatible. __________________ Luscious Linkie Time:- www.AmiBay.com Old Skooler

26 August 2008, 16:04	#67
Eclipse Turpentine Join Date: Oct 2007 Location: Kent, United Kingdom Posts: 739	Here's a data sheet, need to charge the batteries for my camera. Click I also have HY514260B's as well. Last edited by Eclipse; 26 August 2008 at 16:10.

26 August 2008, 16:13	#68
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 38 Posts: 9,185	Awesome, I couldn't find that explicit data-sheet, but since you have, yep that will do fine!!! __________________ Luscious Linkie Time:- www.AmiBay.com Old Skooler

26 August 2008, 16:35	#71
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 10,506	256K * 4 = 1024 K-bit or 128 K-bytes per chip 256K * 16 = 4096 K-bit or 512 K-bytes per chip (4 chips = 2Mbytes) __________________ Thalion Webshrine

26 August 2008, 18:13	#73
Arnie Registered User Join Date: Aug 2005 Location: Leicester/UK Age: 55 Posts: 1,126	Would it be possible to change the two onboard 512 chips with two 1mb chips

26 August 2008, 22:02	#74
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 10,506	I doubt the pinout of 1Mbyte chips would work. They are probably 1-pin (per side) more. It depends on the pin layout. __________________ Thalion Webshrine

28 August 2008, 22:00	#75
Eclipse Turpentine Join Date: Oct 2007 Location: Kent, United Kingdom Posts: 739	Hi, Zetr0, have you successfully done the mod as I'd like to give it a go sometime. Thanks for the guide anyway I appreciate how much effort people put into these things.

28 August 2008, 22:54	#76
Magno Boots Zone Friend Join Date: Feb 2006 Location: Hertfordshire Posts: 680	Eclipse, Zetr0 has confirmed that he has successfully completed the mod and has kindly provided me with the chips to do one of my own. Just waiting on confirmation of what pins actually need to be soldered (nudge nudge ) Magno

28 August 2008, 23:25	#77
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 38 Posts: 9,185	sorry guys... taking some nice new pics right now __________________ Luscious Linkie Time:- www.AmiBay.com Old Skooler

21 December 2008, 22:12	#78
Magno Boots Zone Friend Join Date: Feb 2006 Location: Hertfordshire Posts: 680	Not had any luck with this mod at all guys. I've tried four different types of chips with no joy at all - green screen, yellow screen, light grey screen and no difference at all! One pair came from an old 1200 mb, but still no go. All look the same as the 600's but I have no way of telling if they're compatible or not. So, two questions.. What's the highest temperature I should be using to remove the chips from a graphics card with hot air? Does anyone have two known compatible pairs to sell (as my mb is now flashing green with mod removed) Edit: The board being worked on is a a300 rev.1 - type one. Regards Magno Last edited by Magno Boots; 21 December 2008 at 22:19.

22 December 2008, 01:40	#80
neoX Posts: n/a	Hi, i don't want to start a new thread... in aminet is a hardware hack.. with this hack you can use 72pin ram to build your own card to get 2mb chip in a600 .

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