CSA: Derringer & Platinum

CPU: 030@16Mhz, 030@25Mhz, 030@33Mhz, 030@40Mhz or 68030@50MHz (Platinum Version)
Ram Type: 72pin SIMMS
Max Ram: 32MB
FPU: Optional
MMU: Internal

Requirements: Amiga with 68000 socket.
Should work in any Amiga which previously had a 68000 socket it in providing the board has enough space, this card designed primarily for the A2000 is known to work in an A500 and an A1000 with a socket extender.

68000 CPU optionally plugs into Derringer for compatibility.

Supports industry standard 72-pin SIMMs in 1,2,4,8,16 or 32MB sizes. EDO SIMMs can be used, though it makes no difference.

Has on-board hardware to remap kickstart into 32-bit RAM, freeing the MMU for other uses. Other system code and vectors can also be copied into 32-RAM area.

Installation is fairly simple. Unplug the 68000 CPU from its socket, plug it into the Derringer, and then plug the Derringer into the 68000 socket.

A line needs to be added to the Startup-Sequence right after SetPatch with the 'D3' program to test and allocate the RAM, as well as relocate Kickstart and system vectors.

Problems: The hardware kickstart relocate to be buggy on my OS3.1 system (frequent crashes). Using the C:CPU program to relocate Kickstart via the MMU worked much better.

Jumper settings: There are 2 user jumpers available, JP2 and JP3. JP2 selects the CPU mode on next boot. On selects the 68000, off selects the 68030. A switch can be installed on this jumper block for external control. JP3 selects the E-Clock source. If you decide not to install the 68000 into the Derringer, this jumper must be installed, else it is open.