From a distance I thought that might be right...but there's no DRAMs on the board aside from those on the SIMMs. For posterity before the photos:
(RM3) 7 resistors?
(U11) TI SN74LS04N (Hex Inverter)
(U9) Thailand S 74F08N 2129L04 9249VE (independent two-input AND gates, four count)
(U6) TI J306X2 SN74ALS15N
(U7) TI SN74LS138N (3-line to 8?-line decoder - hard to read the datasheet)
(U8) TI SN74AS21N (Dual 4-Input Positive-AND Gate)
http://www.mouser.com/ds/2/405/sdas085b-102720.pdf
(U10) TI SN74LS31N (Delay element)
http://www.mouser.com/ds/2/405/sdls157-193190.pdf
(U3) TI J705C SN74S158N (serves as a multiplexer I believe; "Quadruple 2-line to 1-line data selectors/multiplexers")
http://pdf1.alldatasheet.com/datasheet- ... S158N.html
(U4) TI J705C SN74S158N
(U1) TI SN74ALS245AN (octal bus transceivers with 3-state outputs)
http://www.mouser.com/ds/2/405/sdas272a-103380.pdf
(RM2) some kind of package I can't read just yet
(U2) TI SN74ALS245AN
(RM1) same as (RM2)
(U12) TI SN74LS32N (quadruple 2-input positive-OR gate)
http://www.mouser.com/ds/2/405/sdls100-196241.pdf
(RM4) 7 resistors?
(U5) Hitachi HD74S158P (probably a quadruple 2-line to 1-line data selector/multiplexer)
There are some other small components (resistors, caps?) not listed here, and a two-position jumper switch
Ahh, the good ol' 7400 series...and the Hitachi thing, whatever it is from the 74 series, is still being made. All parts can be sourced really cheap. More of these are begging to be made! Too bad it's not 10MB but whatever.