Tom Thul, 8 meg, A500 instructions please?

[desiv]

Boot off of the disk.  That should configure it for you.
The RAM doesn't autoconfigure.

You need to use the program autoaddram.
autoaddram needs a file (s:memorylist.aar), which is a text file that lists the memory locations.

If you have a hard drive and you want to add the RAM to your hard drive boot, copy autoaddram to c:
Then copy the memorylist.aar from df0:s to your hard drive s:

Then add, as the first line in your s:startup-sequence

c:autoaddram

desiv

[desiv]

I have a REV 6 A500 with a standard 512k trapdoor.
A jumper cut and a solder dab and I had 1M CHIP and 8M FAST (with Toms 8M).

Then I managed to get a MinimegaChip, so now I have 2M CHIP and 8M Fast.

No hard disk tho.  Running from floppy, although I do have an AEHD High Density floppy drive....
It's pretty workable actually...

I am thinking of going to WB 2.x (I have 1.x in my A1000 and 3.x in my A1200, so it kind of makes sense).  That's the highest I can go and still use the AEHD apparently.

Oh, make sure you have the command FASTMEMFIRST fairly early in your startup-sequence to save some CHIP RAM.

Don't run you WB in interlace mode either.

desiv

[desiv]

The 1M CHIP ram mod takes the 512k trapdoor slowRAM and makes it CHIP RAM.  

As for fastmemfirst, it comes with the OS..
Might be in sys:system (instead of c: ), my machine is off now and I'm getting braindead (cleaning the garage..  :-(   )

Just add it in your startup-sequence somewhere after the autoaddram (probably right after would be fine).  
It might already be in your startup-sequence somewhere...

desiv

[desiv]

Got a link to the mod ?

Yes, but I can't find it now..
It's in my favorites on my laptop at home, so I'll post it when I get home..

desiv

[desiv]

Yeah, this is the link I had.
http://s2.postimage.org/8o0x83w69/A500_6a_1_MBCHIP.png
It's the same info..

You don't need the DKB Minimegchip for this to work.  Just that if you want to use the DKB, you need to do this first.

But you can do this just to get to 1M CHIP.
1M CHIP, for an A500 is plenty, and as long as you have FAST RAM, you'll never miss the slow 512k.

It was a bit nerve wracking for me to poke at my A500 with an exacto tho.. ;-)

desiv

[desiv]

Great AmmoJammo!!
Looks nice (WB 2.x there?)...

If you can find a DKB MiniMegaChip, you can pretty easily get to 2M chip.
They aren't common, but they pop up fairly frequently.

So if you have a 500+ with Rev8a and 1mb chip ram already and you put in a trapdoor 1mb ram board (TomThul has a new 1mb battery backed board) do you need to do anything to enable 2mb chip-ram?

Not familiar with the 500+, sorry...
I think it already has the Agnus for 2M CHIP support, but I don't think the MiniMegaChip works on it (based on a quick google search, but that could be wrong)..

As for Tom's new board, I'm not that familiar with it yet...
I helped him beta test some of his other boards, and he asked me about this one, but I had already modded and MiniMegaChip'ed my A500, so I didn't have a good test machine anymore..

desiv

[desiv]

Tom's doesn't auto boot, although you can use a floppy to boot it from what I understand, not sure if it has the same conflict problems?

Yes, there's a boot floppy which loads the IDE driver, then it transfers control over to the HD and you finish the boot of the OS from your HD.

I have it for my A1000 and it works pretty well.
Especially since I use a "kickwork" floppy to kickstart the 1000, and then load the driver on the A1000.  Since I needed a floppy for my kickstart, it's still just one floppy in the system when I boot.

Not sure about size conflicts, as the CF/IDE card I have is a sidecar (Tom made a few different types).

desiv