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Documentation about the Vampire hardware

"Garlic" CPU Switch (M.H.) A1k.org

Chris T.

Posts 89
07 Dec 2019 10:46


On A1k.org there is Hardware Project of M. H. called "Garlic 68k CPU switch for the 68000 socket. I was really interested, if this CPU switch could work with my Vampire 500 V2+. With two 68000 Motorola CPU it worked, however the Vampire could never been shut down. The Vampire Always boots. Is it possible, that Gunnar or somebody of the Vampire Team could have a Closer look on this to achieve compatibility? What is the Benefit? Everybody could easily switch from the Vampire to the original CPU, Speed and 100% disk compatibility as KS1.3 would be in place… EXTERNAL LINK 
Thanks in Advance! Chris


Adam A

Posts 75
08 Dec 2019 15:57


The vampire already has its own turtle mode to match 68000 speed ( I think)




Igor Majstorovic
(Apollo Team Member)
Posts 297
08 Dec 2019 16:09


Without even looking at that project I can conclude that is based on bus arbitration. Such thing is not supported on V500 and card or something else could die. If you have some problems with V500 compatibility can you explain more.I could try to recreate your problem and give more details.tnx


Chris T.

Posts 89
13 Dec 2019 20:11


Thank you for your Reply. I will test the new core which game disks with kick 1.3 Rom does not work. So far it is SWIV and FATE GATES OF DAWN. Yes, one can use whdload, but it would be the ultimate solution, if one could use the maprom function with 100% disk compatibility. That's why I prefer the V500 V2+ meanwhile instead of the V1200. But do not worry, I am already saving my Money for this as well .-)


Eric Gus

Posts 358
14 Dec 2019 07:10


Thinking about this, it still might be a good option for 1.2/1.3KS apps/games that lack WHDLOAD slaves (i.e. "Instant Music" by Electronic Arts) .. and dont play well with fast CPUs, KS beyond 1.3 and only work with 512kb chip (no fast/no slow ram).


Gunnar von Boehn
(Apollo Team Member)
Posts 4335
14 Dec 2019 07:48


eric gus wrote:

Thinking about this, it still might be a good option

 
Technically this card can NOT work with the V2.
The technical reasons were known and explained before.

If you have problems running old games with new kickstart then
just load/map Kick 1.3 in the Vamp, and turn the fastmem off.


Eric Gus

Posts 358
15 Dec 2019 08:43


Gunnar von Boehn wrote:

 
eric gus wrote:

  Thinking about this, it still might be a good option
 

   
  Technically this card can NOT work with the V2.
  The technical reasons were known and explained before.
 
  If you have problems running old games with new kickstart then
  just load/map Kick 1.3 in the Vamp, and turn the fastmem off.
 

 
  Tried that .. didnt work. I havent tried in a few core revisions, maybe I will give it another try.


Gunnar von Boehn
(Apollo Team Member)
Posts 4335
15 Dec 2019 18:01


eric gus wrote:

Tried that .. didnt work. I havent tried in a few core revisions, maybe I will give it another try.

What exactly did you try and did not work?
Boot Kick 1.3?
Turn off fastmem?

This all should work.

How do you start to old game?
Can you name an example?



Chris T.

Posts 89
15 Dec 2019 20:38


I will Check as well and Report Here...


Eric Gus

Posts 358
16 Dec 2019 07:57


Gunnar von Boehn wrote:

 
eric gus wrote:

    Tried that .. didnt work. I havent tried in a few core revisions, maybe I will give it another try.
   

    What exactly did you try and did not work?
    Boot Kick 1.3?
    Turn off fastmem?
   
    This all should work.
   
    How do you start to old game?
    Can you name an example?
   
 

 
  I did mention it above but I will again..
 
  "Electronic Arts: Instant Music"
 
  yea I tried the bootkick 1.3 and turned off fastmem.. didnt run..
 
  The game boots from floppy..
 
Its a pretty old Amiga title.. dating back to 1.1? 1.2 KS/WB..

If someone knows how to move this to a WHDLoad slave that would be good as an alternative.. I dont know how.. its a typical Amiga DOS disk (afaik)


Chris T.

Posts 89
18 Dec 2019 14:00


Well, the following games crashed, when using kick1.3, turtle mode and original floppy disks:
1. SWIV
2. Fate - Gate of Dawn
3. Turrican
4. Turrican 2 (Turrican 3 works)
others not tried yet. Original Dungeon Master worked.

The A500 boots around 3-4 sec. then Guru Meditation (00000XXXX)...



Eric Gus

Posts 358
19 Dec 2019 05:58


Chris T. wrote:

Well, the following games crashed, when using kick1.3, turtle mode and original floppy disks:
  1. SWIV
  2. Fate - Gate of Dawn
  3. Turrican
  4. Turrican 2 (Turrican 3 works)
  others not tried yet. Original Dungeon Master worked.
 
  The A500 boots around 3-4 sec. then Guru Meditation (00000XXXX)...
 

That is similar to what I recall happening with "Electronic Arts: Instant Music" when booting from floppy using kick1.3/turtle (I will give it another go over the Christmas break)


posts 12