[comp.sys.amiga.hardware] A500 and 1Meg Chip

mikeb@tvnews.tv.tek.com (Mike Boyce) (04/12/91)

  I am trying to figure out how to get 1meg of chipmem on an amiga 500
  /w a fatter agnus. I called the local amiga repair center and they said 
  that I should cut traces on the motherboard to allow the A501 memory
  expansion to be added as chipmemory. Is there any other way? Is there 
  room on the motherboard for more memory? If I must cut traces which ones
  (or where do I find the info)? 

  Also has anyone noticed that area fills into a non-rectangular polygon
  is slower on the A500 than on the A1000? I have been playing "Ghengis 
  Khan" and "Romance of the three kingdoms" (both by KOEI) seem 
  to run much slower on my A500/A501 than my brothers A1000/insiderII. 
  Why? Can I get mine to run faster?

  Thanks in advance
  Mike Boyce
  mikeb@maid.tv.tek.com

al158305@mtecv2.mty.itesm.mx (Gustavo Cordova Avila) (04/14/91)

mikeb@tvnews.tv.tek.com (Mike Boyce) writes:


>  to run much slower on my A500/A501 than my brothers A1000/insiderII. 
>  Why? Can I get mine to run faster?

  hmmm.. I'd reckon it's because your game runs in
chip-ram timing memory, that is, a501's memory is
timed exactly like chip memory, even if the custom
chips can't get to it; on the other hand, on your
brothers computer the game runs on the insiders
memory, which is fast ram.

>  Thanks in advance

your welcome :)

>  Mike Boyce
>  mikeb@maid.tv.tek.com

Gustavo Cordova
al158305@mtecv2.mty.itesm.mx
-- 
| Gustavo Cordova Avila		 | al158305@mtecv2.mty.itesm.mx       |
| Electronic Systems Engineering | PL158305@tecmtyvm.bitnet	      |
+--------------------------------+------------------------------------+

dtiberio@libserv1.ic.sunysb.edu (David Tiberio) (04/16/91)

In article <1991Apr12.080637.2344@tvnews.tv.tek.com> mikeb@tvnews.tv.tek.com (Mike Boyce) writes:
>
>  I am trying to figure out how to get 1meg of chipmem on an amiga 500
>  /w a fatter agnus. I called the local amiga repair center and they said 
>  that I should cut traces on the motherboard to allow the A501 memory
>  expansion to be added as chipmemory. Is there any other way? Is there 
>  room on the motherboard for more memory? If I must cut traces which ones
>  (or where do I find the info)? 
>
>  Also has anyone noticed that area fills into a non-rectangular polygon
>  is slower on the A500 than on the A1000? I have been playing "Ghengis 
>  Khan" and "Romance of the three kingdoms" (both by KOEI) seem 
>  to run much slower on my A500/A501 than my brothers A1000/insiderII. 
>  Why? Can I get mine to run faster?

  Yes, you can get them to run faster. The easiest and fastest way
is to buy a 50mhz accelerator board. 

  I think that the A1000 runs faster because it is reading Kickstart
calls from ram instead of rom. It makes sense to me...

>
>  Thanks in advance
>  Mike Boyce
>  mikeb@maid.tv.tek.com


-- 
    David Tiberio  SUNY Stony Brook 2-3481  AMIGA  DDD-MEN  Tomas Arce 
           Any students from SUNY Oswego? Please let me know! :)

                   Un ragazzo di Casalbordino, Italia.