So this has been driving me crazy.
It seems like the A2091 slows down my A2000 or has a memory conflict or something I'm not sure what but let me give you the symptoms I'm seeing and maybe someone can tell me what causes this:
My current system:
A2000
68010 & 2630 @ Stock w/2MB ram
A2091 w 2MB ram 7.0 roms 4GB HDD
Microbotics 8Up! Ram board fully populated currently set to 4MB
Indivision Mk2
SCSI2HD Drive with 4 Drives HD0 256MB/256MB/3.5MB, HD1 4GB, HD2 4GB, HD3 4GB
1 MB Agnus
3.1 ROMS / 3.1 OS
So there are lots of issues where I see slowdown on the system but I'm going to stick to 1 game that's easy to test and describe all the scenarios I've tested.
The game used for testing is Apidya (running in WHDLoad 18.whatever, latest version). What occurs happens in 2 places. First when the main logo for the game appears the music slows down. The second thing is the top 1/3rd of the game screen during gameplay doesn't show sprites. These are the two symptoms I'm watching for in this test.
No matter what config I try as long as the A2091 is installed and the OS booted from the HD I get these issues. If I leave the same configuration installed and boot from floppy (yes I know there is no WHDLoad in this case) the game runs fine. However, If I use a GVP-HCII instead of the A2091 then these issues don't appear. I've tried running this configuration in all ways imaginable removing extra ram, removing the a2630, changing the ram on the A2091 to 0. Nothing I do changes this issue as long as I'm booted to the HD using the A2091.
So I have two theories and maybe someone has some experience and can help me out. Is this just an issue with the A2091 using system resources and slowing this down, it doesn't appear to be a problem with WHDLoad because using the other SCSI controller I dont get this issue. It also doesn't seem like a ram conflict as when the only ram in the system is the A2091 the problem still occurs.
Or is this possibly a problem with the 7.0 ROMs on the A2091, I've heard stories that these were buggy and the 6.6 version is better, I recently picked up the 6.6 roms but unfortunately it sees all my 4GB partitions as nondos and I don't want to start over with my drives to test a different rom version which might amount to nothing.
Is it possible its a conflict with the SCSI2SD drive, or the large drives or the number of drives? Besides slowing the system down it all seems to run fine when its booted.
I'll answer any other questions , and thanks for taking the time to read this.