Maximum RAM in an A500

[redrumloa]

zipper wrote:
On my towerized+zorroed A500 with Blizzard 2060:
128 MB on Blizzard, max 8 MB on Oktagon 2008 and 2 MB on Megachip2, so total max of 138 MB.

That must be an infintive (sp?) busboard?

[amigamad]

I have an a500 with 4 meg memory expansion in slot underneath a500 and i have a roctec hard drive which i have fitted a full 8 meg memory to but i have not tried booting it yet i will later to see if it will work with 12 meg of memory . :-o  :-)

[zipper]

Infinitiv was a trademark (?) by Micronik; the tower/busboard compo was really made by Micronik. Just looks like the first Ramiga Z5 for A1200. I think they began with towers for A2000 and A500, mine has been done ca. 1993; I bought it 1996. The kbd box has an Infinitiv logo on it.

[mikeymike]

Heh, to think that the original spec of the A500 (in the A500 manual) said 10MB RAM maximum :-)

[Cyberus]

On my towerized+zorroed A500 with Blizzard 2060...

Hang on, doesn't the 2060 fit in the CPU fast slot, which the A500 doesn't have?

[PaSha]

The A500 side expansion slot is identical to the A2000 fast slot, except it's the opposite gender. The expansion boards that come with a500 towers (
(and other expansions like the bodega bay) usually included an A2000 style fast slot in addition to a couple zorro2 slots.

Imagine if the Blizzard 2604 had been released... You could stick one of those on a A1000 :-)

-Paul

[melott]

Hmmm... I'm not so sure the 8 meg limit is correct
in a stock A500.  I have an A1000, which (I think) is
basically the same machine as an A500.
The A1k has the 512k Agnus chip. My A1k has an
512k expansion ram for a total of 1 meg stock.
I have a RocTec A500 harddrive with 8 megs ram
installed. I use the drive on the A1k and when it boots
it shows 512k chip and 8 1/2 megs fast.
So unless there is something different between
the two machines, then 8 megs is not the limit.
I don't know what would be the limit, but my A1k
seems to tell me its not 8 megs.
I had always thought it was 16 megs but I could
very easily be wrong about that.

Mel Ott
 :-o  :-D

[aardvark]

10meg on a standard 68000 _if_ you use a megachip adapter

[Steady]

@ Mel Ott:

That sounds spot on

512k CHIP
512k SLOW
8 Meg FAST

Fairly standard. Worbench and avail report both SLOW and FAST RAM as 'FAST' RAM.

[Mike_Amiga]

:-o The most I've ever attached to my A500+ is an Action Replay MK 3, a Sampling Cartridge and a MIDI device. :-o

Any exrtra ram always came with the various A500's that I owned.

[Cyberus]

PaSha wrote:
The A500 side expansion slot is identical to the A2000 fast slot, except it's the opposite gender.

Hmm, the CPU fast slot is a 100 pin slot, pin compatible with Zorro II, but the CPU slot has a 28MHz (?) CLK (?) line doesn't it?

[bloodline]

Cyberus wrote:

PaSha wrote:
The A500 side expansion slot is identical to the A2000 fast slot, except it's the opposite gender.

Hmm, the CPU fast slot is a 100 pin slot, pin compatible with Zorro II, but the CPU slot has a 28MHz (?) CLK (?) line doesn't it?

Just simulate it with a clock multiplyer off the 7Mhz line

[Kronos]

@aardvark
Close but no cigar .....
2MB chip (with ECS-Agnus)
8MB fast
1.8MB "ranger" (needs adapter to Gary)

[DeQuevedo]

If you get a Zorro 2 expander, you will get 128 Mb in any blizzard for A2000, and thats only in the CPU CARD....

[BoingBoss]

I have 128 megs in my Amiga 500 Tower of Power!   :-D

[AdMartin]

I've got an A500+ in a Micronik Tower and I've been toying with an idea... The memory card from an Amiga 2000A has 512kB Ranger/slowmem and I have some extra chips to populate it fully to 1MB. I'll then put it into the CPU slot of the tower; then I wouldn't have to mess with the Gary. I found one off ebay for 1 euro, but unfortunately it didn't work (I tested it in my A2000 as well, to make sure). If I find another one I'll have:

2MB chipmem
8MB fastmem
1MB slowmem
512kB shadow RAM on my Blizzard Turbo board

That'd be one maxed out 68000 A500+! :-D It'd be cool to find one of those Supra 28MHz 68000 accelerators, since the Blizzard Turbo board only runs at 14MHz, but then I'd lose the 512kB shadow RAM... :-?

/Martin