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Cherry Master I (ver.1.01, set 9) improvements [Roberto Fresca, Team Europe]:

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* Redumped the NMC27CP128Q devices as 27C256 and found complete/perfect binaries.
 * Descrambled the program.

This is weird... The National NMC27CP128Q datasheet says that these devices are
16k x8 (0x4000). Also the diagram lacks of A14 line. Surprisingly they can hold
32k x8 (0x8000) binaries. We're thinking if the ones present in the board are fake.

Machines promoted to working
----------------------------
Cherry Master I (ver.1.01, set 9) [Roberto Fresca, Team Europe]
This commit is contained in:
Roberto Fresca 2020-07-27 12:38:05 +02:00
parent 7ed8056064
commit d6ea641f82
1 changed files with 22 additions and 10 deletions
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32
src/mame/drivers/goldstar.cpp
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@ -11247,20 +11247,32 @@ ROM_END
The EPROMS devices only hold the second half of the needed program and regular tiles data.
EPROMS are NMC27CP128Q that are sized 0x4000, when the real data should be 0x8000 for each position.
Compare the set against cmasterb to see the lack of data.
So... These aren't bad dumps, but should be marked as them due to the above mentioned.
*EDIT*
Even when the NMC27CP128Q datasheet says that these devices are 128 Kbits (16k x8), we redumped
them as 27c256, and got perfect complete 32k x8 dumps.
This is very weird, since the datasheet diagram clearly shows that this device lacks of A14 line.
So... The National NMC27CP128Q devices could hold twice the specified size, or these on the board
are just fake devices for protection purposes.
*/
ROM_START( cmasteri )
ROM_REGION( 0x10000, "maincpu", 0 ) // seems underdumped, but is coming from a real NMC27CP128Q
ROM_LOAD( "9.u81", 0x0000, 0x4000, BAD_DUMP CRC(ed295d09) SHA1(05381cb76a73751f40e1860969049b5145857fd9) ) // 1st half is missing
ROM_REGION( 0x10000, "maincpu", 0 ) // 32k x 8 data coming from a real NMC27CP128Q
ROM_LOAD( "9.u81", 0x0000, 0x1000, CRC(2738eb55) SHA1(95e420544f36e4ce6358f14fee7a6b7ecd4cc568) )
ROM_CONTINUE(0x4000,0x1000)
ROM_CONTINUE(0x3000,0x1000)
ROM_CONTINUE(0x7000,0x1000)
ROM_CONTINUE(0x1000,0x1000)
ROM_CONTINUE(0x6000,0x1000)
ROM_CONTINUE(0x2000,0x1000)
ROM_CONTINUE(0x5000,0x1000)
ROM_REGION( 0x18000, "gfx1", 0 ) // seems underdumped, but they are coming from real NMC27CP128Q
ROM_LOAD( "7.u16", 0x00000, 0x4000, BAD_DUMP CRC(a9f06056) SHA1(39f6827527ba905fe9c12b8b9e1d4a4be9b605c3) ) // 1st half is missing
ROM_LOAD( "6.u11", 0x08000, 0x4000, BAD_DUMP CRC(2e8f4bf6) SHA1(11b992b045dd4fa1d6c95307aa9de2669c0a2404) ) // 1st half is missing
ROM_LOAD( "5.u4", 0x10000, 0x4000, BAD_DUMP CRC(5a0a4b73) SHA1(8dd8b511b35de19afb9c459ac88c15799a07f717) ) // 1st half is missing
ROM_REGION( 0x18000, "gfx1", 0 ) // 32k x 8 data coming from real NMC27CP128Q devices
ROM_LOAD( "7.u16", 0x00000, 0x8000, CRC(19cc1d67) SHA1(47487f9362bfb36a32100ed772960628844462bf) )
ROM_LOAD( "6.u11", 0x08000, 0x8000, CRC(63b3df4e) SHA1(9bacd23da598805ec18ec5ad15cab95d71eb9262) )
ROM_LOAD( "5.u4", 0x10000, 0x8000, CRC(e39fff9c) SHA1(22fdc517fa478441622c6245cecb5728c5595757) )
ROM_REGION( 0x8000, "gfx2", 0 )
ROM_LOAD( "4.u15", 0x0000, 0x2000, CRC(8607ffd9) SHA1(9bc94715554aa2473ae2ed249a47f29c7886b3dc) )
@ -19246,7 +19258,7 @@ GAMEL( 1991, cmastere, cmaster, cm, cmasterb, cmaster_state, init_cmv4,
GAMEL( 1991, cmasterf, cmaster, cm, cmasterb, cmaster_state, init_cmv4, ROT0, "Dyna", "Cherry Master I (ver.1.01, set 7)", 0, layout_cmasterb )
GAMEL( 1991, cmasterg, cmaster, cm, cmasterg, cmaster_state, init_cmv4, ROT0, "Dyna", "Cherry Master I (ver.1.01, set 8, V4-B-)", 0, layout_cmasterb )
GAMEL( 1991, cmasterh, cmaster, cm, cmasterh, cmaster_state, init_cmv4, ROT0, "Dyna", "Cherry Master I (ver.1.10)", 0, layout_cmasterb )
GAMEL( 1991, cmasteri, cmaster, cm, cmasterb, cmaster_state, init_cmv4, ROT0, "Dyna", "Cherry Master I (ver.1.01, set 9)", MACHINE_NOT_WORKING, layout_cmasterb ) // program and regular tiles roms lack of the 1st half of data.
GAMEL( 1991, cmasteri, cmaster, cm, cmasterb, cmaster_state, init_cmv4, ROT0, "Dyna", "Cherry Master I (ver.1.01, set 9)", 0, layout_cmasterb ) // NMC27CP128Q being 32k x8 instead of 16k x8...
GAMEL( 199?, super7, cmaster, cm, cmaster, cmaster_state, init_super7, ROT0, "bootleg", "Super Seven", MACHINE_NOT_WORKING, layout_cmasterb )
GAME ( 199?, wcat3a, wcat3, chryangl, cmaster, cmaster_state, init_wcat3a, ROT0, "E.A.I.", "Wild Cat 3 (CMV4 hardware)", MACHINE_NOT_WORKING ) // does not boot. Wrong decryption, wrong machine or wrong what?