Amiga 500 Rev 5. and ECS chip set...??

[waltermixxx]

Well my ECS chips have arrived, I Installed my Super Denise,
and my fatter Agnus....
 
I had a devil of a time getting my Fat Agnus out, but she finally did,
the socket looked fine, and the chip I got looks great as well...
 
I modded my REV 5 motherboard so Jumper 2 is shorted between pin 1 & 2 and not 2 & 3.
 
I Have a baseboard Memory card, with the Gary chip adapter...
the jumpers on the Gary chip are set to Fatter, and KS 1.3 ( I have 3.1)
 
the jumpers on the Memory card (populated with 2 megs of ram)  are both set for
1 & 2 and 4 & 5 (fatter agnus)  ...  now my A500 does not see 1 meg of chip ram like I was hoping, but only 250kbytes or so...
 
not sure what to do...  it's only seening about half of the original chip memory...
anyone know why this might be?

[waltermixxx]

latest update...  I read the manual some more, and realized that in order for the A500 to see the additional chip ram, the chip ram has to sit in row 0.   Then it says I can populate the rest in any order...
 
sure enough the amiga does see the full 1 meg of chip ram ( actually about 820 K) as some of it is being used as a ram disk,   then 0 other memory...
 
so the question is,  I have 2 megs of ram in total  .5 will be used for chip ram, leaving me with 3 addtional rows of memory, in which rows should they go in?
 
I tried 2, 6, 3  .... if I boot of the Baseboard boot disk 1_7  the system crashes after booting, if I boot from a regular 3.1 boot disk, the computer sees the 1 meg of ram,
but it does not see the rest... so it looks like I have to do the install again...  
 
Just wondering why the a500 would crash with a guru thingy of 8000 000B then some hex number 0007ffbc or something like that...either way... hope I can sort it out... it's too late now, 2:22 am and I have to go first downstairs to unplug the soldering iron, and second to bed...
 
cheers.  ( it is nice to have an ecs system with 1 meg chip ram, but it would also be nice to have 1.5 megs of other ram as well...
 

[waltermixxx]

P 6 Of the Baseboard docs for Rev 5 says to short JP2 2-3 not 1-2. Are you looking at it backwards?
 
Make sure Row 0 is populated with chips on the baseboard. That is the other 512k chip.
 
Make sure you did not cut pin 32 like the commodore 1 meg upgrade state.
 
Also I would imagine you have the ribbon cable from the gary daughterboard to the trapdoor slot board.

Ribbon cable is on
 
pin 32 is not cut currently,
 
( I had cut it to test out the Fatter Agnus and my original supra 512K upgrade board ( it worked so I know my fatter angus is ok)
 
on page 6 Diagram D in the table it says:
 
Angus Connected Disconnected
 
Fat 2 & 3 1 & 2 Shown <--- not my setup
Fatter 1 & 2 2 & 3 Fatter** 2 & Gary Bd 1 & 3  
how does one tell which pal?
 
Currently i have my 16 Ram Chips setup like this:
 
Row 0 4 chips
Row 2 4 chips
Row 3 4 chips
Row 6 4 chips
 
so I get the 1 meg of chip ram, but system crashes if I boot of my Baseboard Install/boot disk...
 
so made a little bit of head way
 
As always your support is appreciated!!!!!
 
Cheers.

[waltermixxx]

okie doke, I'll create a new boot up disk
fresh copy of wb 3.1 and edit the startup-sequence file
to include the cRam app...

cheers!

[waltermixxx]

worked like a charm,
created new 3.1 boot disk with cRam at the top of the Startup-Sequence file,
and got all my RAM   1 meg chip ram and 1.5 megs of other ram...
 
thank you MR. Omnicron10  

[waltermixxx]

one interesting note:

when i go into sysinfo, it shows the ram in 4 windows.
3 x 512 k segments
1 x 1 meg chip ram...

is this use ful?   why would it not show up and 2 screens, 1 meg chip and 1.5 fast?