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originally designed (and maybe produced?

April 26, 2017designed maybe originally produced

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originally designed (and maybe produced?

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newer MegaRAM version; fully compatible to Megaram 1; Atari Basic: YES! XL/XE Selftest: YES! Antic access: no! – Megaram 1,2 => 512k B.Pahl 512k 4000-7FFF 2,3,5,6,7 B ($D301) Banks: 03,07,0B,0F,23,27,2B,2F,43,47,4B,4F,63,67,6B,6F, 83,87,8B,8F,A3,A7,AB,AF,C3,C7,CB,CF,E3,E7,EB,EF; Notes: upgrade for Megaram 1 or 2 to 512kbytes (which means a total of 576kbytes memory); requires a small pcb (in connection with the existing Megaram 1 or 2 pcb) and the following chips: 2x 414256 (RAM), 1x 74LS138 plus some more wires inside the computer; additionally one may install a switch to switch down to 320k or even 64k (no RD!) if needed; advantage: more RAM, Basic still there, 26AE & 8ACE banks…; Atari Basic: YES! XL/XE Selftest: YES! Antic access: no! – Megaram 3 Klaus Peters 256k 4000-7FFF 2,3,6,7 B ($D301) Banks: 23,27,2B,2F,63,67,6B,6F,A3,A7,AB,AF,E3,E7,EB,EF; Notes: uses 256kx4 Chips (514256-70); fully compatible to K.P./R.D. Megaram 1+2; originally designed by Ralf David; Atari Basic: YES! X