A500 4mb-8mb fast ram expansion - Page 2

Zetr0 · 22 July 2012, 01:09

@duga / lost loven

In regards to SLOWMEM in the trapdoor slot.

If the SLOW memory is asserted in the RANGER area of memory than this will most likely work with the adapter.

However this extra 1.8MB (max) area of memory will be 5 times slower to access - it would be best to remove / disable it once installed with one of Kips K504/K508 adapters

If the SLOW memory is not in RANGER area of memory then this will conflict with the FAST ram adapter. but as SLOW memory is nearly 5 times slower than CPU FAST RAM, its best to get shot of it.

In regards to Mika's 68KIDE, while I believe it will work, no one has tested it 100%

lost_loven · 22 July 2012, 01:55

Doesn't the 1 meg chip ram depend on the trap door slow mem? If removed I don't want to have 512k chip. (I did the 1 meg hack for the rev 5 board) So then one would hope it works with it then.

lost

Lord Aga · 22 July 2012, 11:18

Quote:

Originally Posted by kipper2k

Now, time to start on my 3rd project (that i should finish this weekend). This one is for all Amiga's and if it works will make a lot of people happier

(hopefully)

Please be scan doubler please be scan doubler

SleepyMan · 22 July 2012, 11:57

Cool

together with the A600 memory expansion i'm

Zetr0 · 22 July 2012, 11:58

Hello lost_loven

Quote:

Originally Posted by lost_loven

Doesn't the 1 meg chip ram depend on the trap door slow mem? If removed I don't want to have 512k chip. (I did the 1 meg hack for the rev 5 board) So then one would hope it works with it then.

lost

its all about memory areas.

CHIP ram (upto 2MB pending on Agnus version) is asserted (setup) outside of the 8MB FAST RAM memory area.

The A500 has many memory areas dedicated to certain things, it has 24bits of address space to hold everything in (16MB).

The first 8MB is reserved for things like CHIP ROM, KICK ROM and RANGER memory locations, essentially leaving 8MB of SPACE for anything else - like CPU FAST RAM adapters.

When you use SLOW memory, that is not CHIP RAM ( 2MB ) or set in RANGER memory area (1.8MB) then you start to use the other 8MB of memory that is used for FAST RAM.

to sum up, with an A500 you can have an 8MB FAST adapter, 2MB of CHIP RAM, and 1.8MB of RANGER (SLOW) Memory.

kipper2k · 22 July 2012, 12:25

Just thought i'd mention that the RAM in both the A500 and A600 boards are New (old stock) infineon Ram chips that were still in unopened packaging rated at 60ns. Unless i specify otherwise i will use these until i run out and then use the refurbished chips i also bought

duga · 22 July 2012, 13:04

Will you serve the orders as interest were given in this thread? Or is First ordered, First served from when you say it's time to order?

kipper2k · 22 July 2012, 13:05

Quote:

Originally Posted by duga

Will you serve the orders as interest were given in this thread? Or is First ordered, First served from when you say it's time to order?

Hi,

i will use this thread as the primary list for peoples declaration of interest based on time posted. Once i post on Amibay as well, i will process orders chronologically. I do intend on making enough to satisfy demand but i will only order in small batches as per usual so i don't get stuck with too many parts

orange · 22 July 2012, 13:13

Does it fit under RF shielding?

lost_loven · 22 July 2012, 15:49

So I guess i am 1st in line!

Thanks ZetrO for the explanation

lost

ptyerman · 22 July 2012, 17:39

Interested in one as well.

kipper2k · 22 July 2012, 21:09

Hi All,

the A500 board is now working with the 8mb ram, it appears i had a problem with my fingers and keyboard so should be set now

, here's a couple of pics...

click on the link below to supersize the image

http://www.kipper2k.com/amiga/a500/8mb_supersize.jpg

heres a quick pic showing available ram...

kipper2k · 22 July 2012, 21:15

Quote:

Originally Posted by orange

Does it fit under RF shielding?

not sure, i'm gonna guess and say no, but i'll try to find my old sheilding

amiman99 · 23 July 2012, 04:22

@Kipper2k
Any plans for A500 8MB RAM board with IDE controller? Is the RAM autoconfig? (Wishful thinking)

I know Jens will have one available but it's only with 2MB, 8 would be better.

Thanks

kipper2k · 23 July 2012, 04:33

Quote:

Originally Posted by amiman99

@Kipper2k
Any plans for A500 8MB RAM board with IDE controller? Is the RAM autoconfig? (Wishful thinking)

I know Jens will have one available but it's only with 2MB, 8 would be better.

Thanks

Hi, the ram is autoconfig on bootup

IDE controller is on my list but not yet, too much on my plate

Lord Aga · 23 July 2012, 15:49

I'm also quite interested in IDE for A500. There's no hurry, of course, but it would be nice to know how you plan to make that one. Will it be some kind of add on for this expansion? Or a standalone gadget? Or a totally new RAM expansion with IDE?

kipper2k · 23 July 2012, 16:02

Quote:

Originally Posted by Lord Aga

I'm also quite interested in IDE for A500. There's no hurry, of course, but it would be nice to know how you plan to make that one. Will it be some kind of add on for this expansion? Or a standalone gadget? Or a totally new RAM expansion with IDE?

Hi,

it would be a case of simply adding the controller, header and lines to the board, mabbe redesign a little bit to save space. there is room under the board that can be used too to reduce the orerall size of the board.

You would need the custom 1.3 rom as well.

Lord Aga · 23 July 2012, 16:43

Sorry, still a bit unclear

Do you mean it will be a new, redesigned expansion board, with RAM and IDE ?

And, it wont work at all with regular 1.3, or it will but it just wont be bootable (can boot with floppy and see HD drives) ?

kipper2k · 23 July 2012, 16:55

Quote:

Originally Posted by Lord Aga

Sorry, still a bit unclear

Do you mean it will be a new, redesigned expansion board, with RAM and IDE ?

And, it wont work at all with regular 1.3, or it will but it just wont be bootable (can boot with floppy and see HD drives) ?

k, same board as such, just adding the IDE portion (ram will still be on board) and to use the ide functions you must use a 1.3 kickstart rom that has been modified to support ide functions (if i am wrong someone please correct me). Ram will still be functional even if you only use a regular kickstart rom

Lord Aga · 23 July 2012, 16:59

Thanx !
Alrighty then... guess I'll have to find those modified ROMs somewhere huh, nudge nudge

22 July 2012, 21:09	#32
kipper2k Registered User Join Date: Sep 2006 Location: Thunder Bay, Canada Posts: 4,323	Hi All, the A500 board is now working with the 8mb ram, it appears i had a problem with my fingers and keyboard so should be set now , here's a couple of pics... click on the link below to supersize the image http://www.kipper2k.com/amiga/a500/8mb_supersize.jpg heres a quick pic showing available ram... Last edited by kipper2k; 22 July 2012 at 21:18.

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22 July 2012, 01:09	#21
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 49 Posts: 9,768	@duga / lost loven In regards to SLOWMEM in the trapdoor slot. If the SLOW memory is asserted in the RANGER area of memory than this will most likely work with the adapter. However this extra 1.8MB (max) area of memory will be 5 times slower to access - it would be best to remove / disable it once installed with one of Kips K504/K508 adapters If the SLOW memory is not in RANGER area of memory then this will conflict with the FAST ram adapter. but as SLOW memory is nearly 5 times slower than CPU FAST RAM, its best to get shot of it. In regards to Mika's 68KIDE, while I believe it will work, no one has tested it 100%

22 July 2012, 01:55	#22
lost_loven Registered User Join Date: May 2007 Location: winnipeg Posts: 358	Doesn't the 1 meg chip ram depend on the trap door slow mem? If removed I don't want to have 512k chip. (I did the 1 meg hack for the rev 5 board) So then one would hope it works with it then. lost

22 July 2012, 11:57	#24
SleepyMan Registered User Join Date: Jan 2009 Location: Harderwijk/Netherlands Posts: 25	Cool together with the A600 memory expansion i'm

22 July 2012, 12:25	#26
kipper2k Registered User Join Date: Sep 2006 Location: Thunder Bay, Canada Posts: 4,323	Just thought i'd mention that the RAM in both the A500 and A600 boards are New (old stock) infineon Ram chips that were still in unopened packaging rated at 60ns. Unless i specify otherwise i will use these until i run out and then use the refurbished chips i also bought

22 July 2012, 13:04	#27
duga Registered User Join Date: Nov 2010 Location: Sweden Posts: 528	Will you serve the orders as interest were given in this thread? Or is First ordered, First served from when you say it's time to order?

22 July 2012, 13:13	#29
orange Registered User Join Date: Apr 2007 Location: Belgrade Posts: 567	Does it fit under RF shielding?

22 July 2012, 15:49	#30
lost_loven Registered User Join Date: May 2007 Location: winnipeg Posts: 358	So I guess i am 1st in line! Thanks ZetrO for the explanation lost

22 July 2012, 17:39	#31
ptyerman Registered User Join Date: Jun 2012 Location: Worksop/UK Age: 59 Posts: 1,328	Interested in one as well.

23 July 2012, 04:22	#34
amiman99 Registered User Join Date: Sep 2009 Location: San Antonio, TX USA Age: 50 Posts: 1,185	@Kipper2k Any plans for A500 8MB RAM board with IDE controller? Is the RAM autoconfig? (Wishful thinking) I know Jens will have one available but it's only with 2MB, 8 would be better. Thanks

23 July 2012, 15:49	#36
Lord Aga MI clan prevails Join Date: Jul 2010 Location: Belgrade, Serbia Posts: 1,443	I'm also quite interested in IDE for A500. There's no hurry, of course, but it would be nice to know how you plan to make that one. Will it be some kind of add on for this expansion? Or a standalone gadget? Or a totally new RAM expansion with IDE?

23 July 2012, 16:43	#38
Lord Aga MI clan prevails Join Date: Jul 2010 Location: Belgrade, Serbia Posts: 1,443	Sorry, still a bit unclear Do you mean it will be a new, redesigned expansion board, with RAM and IDE ? And, it wont work at all with regular 1.3, or it will but it just wont be bootable (can boot with floppy and see HD drives) ?

23 July 2012, 16:59	#40
Lord Aga MI clan prevails Join Date: Jul 2010 Location: Belgrade, Serbia Posts: 1,443	Thanx ! Alrighty then... guess I'll have to find those modified ROMs somewhere huh, nudge nudge

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