From Stephen, via Greg Assorted Merit CRT 205 and CRT 205A ROM boards Etched in copper on 205 boards CRT 205 (c) 1984 MERIT INDUSTRIES INC. Etched in copper on 205A boards CRT 205A (c) 1985 MERIT INDUSTRIES INC. If the CRT 205 etcheing is at the top left, .0 is the left most socket, .9 is the right most socketg CRT 205A _0.0 27256 stickered PHRZ1-07 SEX-2A (c)1986 MII _0.1 27256 stickered PHRZ1-07 SEX-1 (c)1986 MII _0.2 27256 stickered PHRZ1-07 STD-8A (c)1986 MII _0.3 27256 stickered PHRZ1-07 STD-7A (c)1986 MII _0.4 27256 stickered PHRZ1-07 STD-6A (c)1986 MII _0.5 27256 stickered PHRZ1-07 STD-5A (c)1986 MII _0.6 27256 stickered PHRZ1-07 STD-4A (c)1986 MII _0.7 27256 stickered PHRZ1-07 STD-3A (c)1986 MII _0.8 27256 stickered PHRZ1-07 STD-2A (c)1986 MII _0.9 27256 stickered PHRZ1-07 STD-1A (c)1985 MII 20 Pin dip at top right was missing CRT 205A _1.2 27256 _1.3 27256 _1.4 27256 _1.5 27256 _1.6 27256 _1.7 27256 _1.8 27256 _1.9 27256 20 Pin dip at top right - couldn't read what kind of chip it was CRT 205 _2.2 27256 stickered GEN-10? 02A (c)1985 MII _2.3 27256 stickered GEN-10? 01A (c)1985 MII _2.4 27256 stickered ENT-101 03A (c)1985 MII _2.5 27256 stickered ENT-101 02A (c)1985 MII _2.6 27256 stickered ENT-101 01A A was handwritten (c)1985 MII _2.7 27256 stickered SPO-101 03A (c)1985 MII _2.8 27256 stickered SPO-101 02A A was handwritten (c)1985 MII _2.9 27256 stickered SPO-101 01A (c)1985 MII 20 Pin dip at top right - couldn't read what kind of chip it was CRT 205A _3.0 27256 stickered GEN-101 02A (c)1985 MII _3.1 27256 stickered GEN-101 01A (c)1985 MII _3.2 27256 stickered ENT-101 03A (c)1985 MII _3.3 27256 stickered ENT-101 02A (c)1985 MII _3.4 27256 stickered ENT-101 01A (c)1985 MII _3.5 27256 stickered SPO-101 03A (c)1985 MII _3.6 27256 stickered SPO-101 02A (c)1985 MII _3.7 27256 stickered SPO-101 01A (c)1985 MII _3.8 27256 stickered SEX-101 <---- checksum was 00000000 02 (c)1985 MII 20 Pin dip at top right - couldn't read what kind of chip it was CRT 205A _5.0 27256 _5.1 27256 _5.2 27256 stickered TW4-05 RNP-2 (c)1986 MII _5.3 27256 stickered TW4-05 RNP-1 (c)1986 MII _5.4 27256 _5.5 27256 _5.6 27256 _5.7 27256 _5.8 27256 stickered TW4-05 SPO-2 (c)1986 MII _5.9 27256 stickered TW4-05 SPO-1 (c)1986 MII 20 Pin dip at top right - couldn't read what kind of chip it was CRT 205 _6.1 27256 stickered GEN-001 02A (c)1985 MII _6.2 27256 stickered GEN-001 01A (c)1985 MII _6.3 27256 stickered ENT-001 02A (c)1985 MII _6.4 27256 stickered ENT-001 01A (c)1985 MII _6.5 27256 stickered SPO-001 03A (c)1985 MII _6.6 27256 stickered SPO-001 02A (c)1985 MII _6.7 27256 stickered SPO-001 01A (c)1985 MII _6.8 27256 stickered SEX-001 02 (c)1985 MII _6.9 27256 stickered SEX-001 01 (c)1985 MII 20 Pin dip at top right - couldn't read what kind of chip it was MAME 0.124A C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_0.0 merit2_0.0 = sex1_2a.bin Phraze Craze (Sex Kit) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_0.1 merit2_0.1 = sex1_1a.bin Phraze Craze (Sex Kit) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_0.2 merit2_0.2 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_0.3 merit2_0.3 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_0.4 merit2_0.4 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_0.5 merit2_0.5 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_0.6 merit2_0.6 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_0.7 merit2_0.7 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_0.8 merit2_0.8 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_0.9 merit2_0.9 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_1.2 merit2_1.2 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_1.3 merit2_1.3 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_1.4 merit2_1.4 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_1.5 merit2_1.5 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_1.6 merit2_1.6 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_1.7 merit2_1.7 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_1.8 merit2_1.8 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_1.9 merit2_1.9 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_2.2 merit2_2.2 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_2.3 merit2_2.3 = gen_101.01a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_2.4 merit2_2.4 = ent_101.03a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_2.5 merit2_2.5 = ent_101.02a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_2.6 merit2_2.6 = ent_101.01a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_2.7 merit2_2.7 = spo_101.03a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_2.8 merit2_2.8 = spo_101.02a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_2.9 merit2_2.9 = spo_101.01a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_3.0 merit2_3.0 = gen_101.02a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_3.1 merit2_3.1 = gen_101.01a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_3.2 merit2_3.2 = ent_101.03a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_3.3 merit2_3.3 = ent_101.02a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_3.4 merit2_3.4 = ent_101.01a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_3.5 merit2_3.5 = spo_101.03a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_3.6 merit2_3.6 = spo_101.02a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_3.7 merit2_3.7 = spo_101.01a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_3.8 merit2_3.8 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_4.0 merit2_4.0 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_4.1 merit2_4.1 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_4.2 merit2_4.2 = gen_101.02a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_4.3 merit2_4.3 = gen_101.01a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_4.4 merit2_4.4 = ent_101.03a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_4.5 merit2_4.5 = ent_101.02a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_4.6 merit2_4.6 = ent_101.01a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_4.7 merit2_4.7 = spo_101.03a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_4.8 merit2_4.8 = spo_101.02a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_4.9 merit2_4.9 = spo_101.01a Trivia ? Whiz (Edition 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_5.0 merit2_5.0 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_5.1 merit2_5.1 = sex_4_1.bin Trivia ? Whiz (Edition 4) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_5.2 merit2_5.2 = rnp_4_2.bin Trivia ? Whiz (Edition 4) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_5.3 merit2_5.3 = rnp_4_1.bin Trivia ? Whiz (Edition 4) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_5.4 merit2_5.4 = sbt_4_2.bin Trivia ? Whiz (Edition 4) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_5.5 merit2_5.5 = sbt_4_1.bin Trivia ? Whiz (Edition 4) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_5.6 merit2_5.6 = ent_4_2.bin Trivia ? Whiz (Edition 4) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_5.7 merit2_5.7 = ent_4_1.bin Trivia ? Whiz (Edition 4) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_5.8 merit2_5.8 = spo_4_2.bin Trivia ? Whiz (Edition 4) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_5.9 merit2_5.9 = spo_4_1.bin Trivia ? Whiz (Edition 4) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_6.1 merit2_6.1 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_6.2 merit2_6.2 NO MATCH C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_6.3 merit2_6.3 = trivia1.ent Trivia ? Whiz (Horizontal - Question set 1) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_6.4 merit2_6.4 = trivia.ent Trivia ? Whiz (Horizontal - Question set 1) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_6.5 merit2_6.5 = trivia.spo Trivia ? Whiz (Horizontal - Question set 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_6.6 merit2_6.6 = trivia2.spo Trivia ? Whiz (Horizontal - Question set 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_6.7 merit2_6.7 = trivia1.spo Trivia ? Whiz (Horizontal - Question set 2) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_6.8 merit2_6.8 = trivia.sex Trivia ? Whiz (Horizontal - Question set 1) = sex_001_02.bin Trivia ? Whiz (Vertical - Question set 1) C:\Hardware\Dataio\roms\Other\merit2\roms>c:\hardware\dataio\roms\mame\mame -romident merit2_6.9 merit2_6.9 = trivia.sx2 Trivia ? Whiz (Horizontal - Question set 1) = sex_001_01.bin Trivia ? Whiz (Vertical - Question set 1)