CompuServe Messages

Ok, the Agnus chip only controls access to RAM, it has NO RAM inside it. The 512K of RAM that the OCS Agnus uses is the 512K on the motherboard. The ECS Agnus controls access to the 512K of RAM on the motherboard, and has the OPTION of controling access to the 512K in the belly slot for a total of 1024K RAM. To activate the 1-meg OPTION, you must "flip" a solder trace near the ECS Agnus socket to put Agnus into "1-meg mode", THEN you must cut other trace near the belly slot. The second trace tells the GARY chip to configure the A501 RAM as "FAST" if the trace is closed; if the trace is open (cut) the GARY configures the A501 as CHIP RAM and gives it to Agnus. Some Amiga's already have the ECS Agnus (#8372a), but it is running in 512K mode. The "1-meg mode" REQUIRES 1-meg of CHIP memory to be present AND configured as CHIP, or the system will crash. The A501 card can't be removed while the Agnus is configured to access 1-meg of CHIP. The Flicker-Free Video II, plugs under the Denise chip, with the Denise chip plugged into the FFV-II. No soldering or hacking to the motherboard. I haven't purchased a Flicker fixer yet, but the FFV is suppose to be quite good. As for the ECS Agnus and flicker… the Agnus has no effect on flicker, but the ECS Denise (requires ECS Agnus) offers a limited 4-color VGA screenmode that requires a VGA/multiscan and is flickerfree. The FFV-II would be a better choice over the ECS Denise, since it removes the flicker from all modes, and is "transparent" to programs. The ECS Agnus (in 1-meg mode) is a desirable option since it doubles the amount of memory used for graphics and sound. Both the ECS chips and FFV-II can be used together. Ron. – ap'ing with AP. (Eagles may fly, but weasels aren't sucked into jet engines.)