I am looking for an a590 on ebay for long time now but with no luck. I like your idea about GVP HDD with scsi hd inside! Is it very hard or rare to find this item on ebay?
There are number of sidecar expansions for the 500. Commodore made the A590 (SCSI hard drive, can have 2 Meg of fast ram option inside, acceleration?), A570 (CDrom drive. compatible with 500RX and Amitrix SCSI-TV, but not any acceleration.). GVP made A500-HD+ (SCSI HD and fast ram), A530 (same, but with 68030 accel). Supra made 500RX (upto 8 Megs of fast), 500XP (SCSI HD & fast ram), Turbo 28 accelerator (68000 clocked at 28 Mhz, cool). It's a shame Supra never combined the last 2. All of these show up eBay fairly often.
There were other brands as well, a few with IDE interfaces instead of SCSI.
