Hi Res Version of Motherboard Front (1752 x 940)
Hi Res Version of Motherboard Back (1752 x 940)
MegaRamHD is an IDE controller and fast RAM expansion connects to the side expansion slot of A500/A500+. It can be expanded with up to 8MB of 16-bit fast ram using standard 30-pin SIMM modules. It also allow you to connect one IDE hard drive (low profile, 1 inch height max). Elsat.device is installed in the MRHD's ROM and doesn't allow you to connect more than one IDE device. This limitation can be fixed with a special patch, probably available on Aminet. Hard drives formated with the MegaRamHD CAN'T be read with standard amiga scsi.device & vice versa because it doesn't use the standard RDB format.
The MegaRAM has a pass through for other units
JP2 JP1 JP2 JP1 JP2 JP1 JP2 JP1 o o o [o] [o] o [o] [o] [o] [o] [o][o] [o] [o] [o] [o] [o] [o] [o] o o [o] o o 2 MB 4 MB 8 MB AMNESIA 2 MB = one pair of 1MB SIMM's 4 MB = two pairs of 1MB SIMM's 8 MB = one pair of 4MB SIMM's AMNESIA = memory switched off
Thanks to Gary Bliter