Jaleco Mega System 32 cart conversions??

[XtraSmiley]

Theoretically possible to ROM swap that to Gratia

Back to this, theoretical or possible? Like, I'm pretty new to this, but I have a cheap EPROM burner, should I order some ROMs, download from MAME and give it a shot?

 

[twistedsymphony]

So I attempted to convert my Idol Janshi Suchie-Pai II (v1.0) to P-47 Aces... This required socketing all of the 42-pin ICs.

I had assumed this would work with ROMs from MAME since the security chips use the same SS92048-01 protection chip...

unfortunately it doesn't seem to work. The game displays garbage on screen and there's a repetitive buzzing sound like the system is constantly rebooting. I've checked, and it's definitely not playing blind.

I've re-dumped and verified all of the program ROMs are correct (I haven't done the graphics ROMs yet ). I also looked over Derick2k's photos for P-47 Aces and I don't see any differences in jumpers or resistor or caps or anything.

putting the original Idol Janshi Suchie-Pai ROMs back in the board works perfectly so I know my sockets are good.

So recently the Mega System 32 came up in some discussions and I decided to dust off this conversion and look at it again with fresh eyes.

I confirmed it worked in MAME, then I literally dumped all of the ROMs that I burned and ran the dumps in MAME as suchie2 hardware and it worked perfectly. I re-burned the program ROMs with fresh, original, 27c040 EPROMs and still it did not work.

Then I took a closer look at the original program ROMs used by suchie2 they're 100ns EPROMS and I was using 120ns EPROMs. I didn't have any 100ns 040s but I did have some 100ns 080s, so I doubled all of the program ROMs and burned them to my 100ns 080s.. and volia... it boots and plays perfectly.

So to anyone attempting conversions (or a future multi on this system) the program ROMs MUST be 100ns or faster

all of the audio and graphics ROMs are 120ns and seem to be fine (indeed even the original audio program ROM is 150ns)

 

[ekorz]

@twistedsymphony you should use these program roms @trap15 worked up: http://daifukkat.su/hacks/p47aces_sfx/

also his cp! https://twitter.com/trap0xf/status/1222250983197011968?s=21

And he has a whole bunch of vids on this game

 

[twistedsymphony]

Thanks for the link, I'll be doing that for sure!

 

[Apocalypse]

For a multi there are two possibilities:
- reproduce the encryption chip, which should be possible, the algorithm being in MAME. On top of that it should support reconfiguration depending of the encryption values/"keys".
- run decrypted ROMs (BG and TX) and bypass the encryption chip completely

I've started to pinout the two connectors of the small daughterboard of the encryption chip (some games have it on a daughterboard, for other games it's soldered to the romboard):

80	79	78	77	76	75	74	73	72	71	70	69	68	67	66	65	64	63	62	61
Vcc	JP6	A15_TX_ROM	A11_TX_ROM	A7_TX_ROM	A3_TX_ROM	NC	A19_BG_ROM	A17_BG_ROM	A13_BG_ROM	A9_BG_ROM	A5_BG_ROM	A1_BG_ROM	D6_TX_ROM	D2_TX_ROM	D7_BG_MB	D7_BG_ROM	D3_BG_MB	D3_BG_ROM	Gnd
60	59	58	57	56	55	54	53	52	51	50	49	48	47	46	45	44	43	42	41
Vcc	A17_TX_ROM	A13_TX_ROM	A9_TX_ROM	A5_TX_ROM	A1_TX_ROM	NC		A15_BG_ROM	A11_BG_ROM	A7_BG_ROM	A3_BG_ROM	A-1_BG_ROM	D5_TX_ROM	D0_TX_ROM	D5_BG_MB	D5_BG_ROM	D1_BG_MB	D1_BG_ROM	Gnd
40	39	38	37	36	35	34	33	32	31	30	29	28	27	26	25	24	23	22	21
Vcc	A18_TX_ROM	A14_TX_ROM	A10_TX_ROM	A6_TX_ROM	A2_TX_ROM	NC		A16_BG_ROM	A12_BG_ROM	A8_BG_ROM	A4_BG_ROM	A0_BG_ROM	D4_TX_ROM	D1_TX_ROM	D6_BG_MB	D6_BG_ROM	D2_BG_MB	D2_BG_ROM	CN3_b1
20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1
Vcc	A16_TX_ROM	A12_TX_ROM	A8_TX_ROM	A4_TX_ROM	A0_TX_ROM	Gnd	A18_BG_ROM	A14_BG_ROM	A10_BG_ROM	A6_BG_ROM	A2_BG_ROM	D7_TX_ROM	D3_TX_ROM	Gnd	D4_BG_MB	D4_BG_ROM	D0_BG_MB	D0_BG_ROM	Gnd
60	59	58	57	56	55	54	53	52	51	50	49	48	47	46
Gnd	Gnd	CN3_b14	CN3_a13	CN3_c11	CN3_b10	CN3_a9	CN3_c7	CN3_b6	CN4_b17	CN4_b19	CN4_b21	CN4_b23	CN4_b25	Vcc
45	44	43	42	41	40	39	38	37	36	35	34	33	32	31
Gnd	Gnd	CN3_c13	CN3_b12	CN3_a11	CN3_c9	CN3_b8	CN3_a7	CN3_c5	CN4_b18	CN4_b20	CN4_b22	CN4_b24	CN4_b26	Vcc
30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Gnd	Gnd	CN3_a14	CN3_c12	CN3_b11	CN3_a10	CN3_c8	CN3_b7	CN3_a6	CN4_a18	CN4_a20	CN4_a22	CN4_a24	CN4_a26	Vcc
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1
Gnd	CN3_c14	CN3_b13	CN3_a12	CN3_c10	CN3_b9	CN3_a8	CN2_c6	CN4_a17	CN4_a19	CN4_a21	CN4_a23	CN4_a25	CN3_a15	Vcc

 

[AlxUnderBase]

@twistedsymphony you should use these program roms @trap15 worked up: http://daifukkat.su/hacks/p47aces_sfx/

also his cp! https://twitter.com/trap0xf/status/1222250983197011968?s=21

And he has a whole bunch of vids on this game

Grabbed in this morning this game . Praying to be 100% working condition and to put Aces on it !

 

[AlxUnderBase]

Grabbed in this morning this game . Praying to be 100% working condition and to put Aces on it !

@twistedsymphony ... received with case cracked , but the romboard looks good , only a bend pin from an eeprom was noticed . anyway , i dumped all socketed eeproms (32 pins ones , the bigger ones are soldered) and compared with mame . chips are good . I tried this on motherboard that comed with Tetris Plus cart (tetris is working perfectly) . Any ideea why does that way ?

View: https://youtube.com/shorts/LRY4kGUoOXc?feature=share

 

[nem]

Pretty sure you need the additional daughterboard for the game to boot.

Remember to apply @trap15's rom fix when you burn your P-47 set:

http://daifukkat.su/hacks/p47aces_sfx/

 

[twistedsymphony]

Pretty sure you need the additional daughterboard for the game to boot.

^exactly this. Mahjong games wont boot without the Mahjong adapter board plugged into the big white connector on the bottom of the mobo
http://www.changevworld.com/suchie/Pai_2_MegaSystem32.htm

 

[rtw]

Pretty sure you need the additional daughterboard for the game to boot.

Remember to apply @trap15's rom fix when you burn your P-47 set:

http://daifukkat.su/hacks/p47aces_sfx/

Or use the latest version dumped by @Derick2k which fixes the issue it's in MAME.

 

[nem]

Oh, nice!

 

[AlxUnderBase]

Pretty sure you need the additional daughterboard for the game to boot.

Remember to apply @trap15's rom fix when you burn your P-47 set:

http://daifukkat.su/hacks/p47aces_sfx/

P:47 set is prepared from last year (almost 1 year took in transit for this donor using JP post surface services ) … only thing is to burn the eeproms now Thank you brothers !

 

[AlxUnderBase]

I did P47 Aces conversion ! (start yesterday - finished this night)

Many thanks to brother @twistedsymphony for findings and testings ! God bless you brother and your family too !
Many thanks to @Derick2k for amazing pictures !

Removed 12 chips with 42 pins + cleared 588 traced holes , installed so far 14 x 42 pins sockets , soldered on the board
This is Jaleco Mega System 32 (Conversion to P:47 Aces)

ps : if someone knows how to activate the demo sounds , will be great to try it (i changed the 4 pin on dip switch bank 1 but even if in test menu said is ON , in game is not)

Find out the settings for arttract mode sounds + FBI message (dip switch bank 3 related)

 

[twistedsymphony]

Nice work!

 

[lorenzo2mars]

Hello buddies, i'd like to convert my TETRIS to P47. Do you think it's possible ?

 

[AlxUnderBase]

Hello buddies, i'd like to convert my TETRIS to P47. Do you think it's possible ?

I also have Tetris Plus and so far i don't know if is possible to use the P:47 set on Tetris Plus romboard [maybe only if are some patches (see with Apo if he did these files) files who can be used on romboards with this custom "ss92046_01"] .

@twistedsymphony mentioned the games you can use on Tetris Plus (he did the conversion from Angel Kiss (ss92047_01) to Tetris Plus (ss92046_01) with patched files from Apocalypse .
Maybe Apo did patched files for P:47 (ss92048_01) to be used on Tetris Plus (ss92046_01) romboard

So far we know these (Tetris & P:47) romboards use different custom ic's .

--ss92046_01 Protection Chip
1994, bbbxing, "Best Bout Boxing (ver 1.3)"
1994, hayaosi2, "Hayaoshi Quiz Grand Champion Taikai"
1994, hayaosi3, "Hayaoshi Quiz Nettou Namahousou (ver 1.5)"
1994, hayaosi3a, "Hayaoshi Quiz Nettou Namahousou (ver 1.2)"
1995, tetrisp, "Tetris Plus (ver 1.0)"
1996, wpksocv2, "World PK Soccer V2 (ver 1.1)"
1997, bnstars, "Vs. Janshi Brandnew Stars (Ver 1.1, MegaSystem32 Version)"

for P:47 you need romboards from one of these titles

--ss92048_01 Protection Chip
1995, p47aces, "P-47 Aces"
1994, suchie2, "Idol Janshi Suchie-Pai II (ver 1.1)"
1994, suchie2o, "Idol Janshi Suchie-Pai II (ver 1.0)"

 

[twistedsymphony]

Correct. for a simple rom-swap conversion you need a donor cart with a matching protection chip from my lists.
if you don't have a donor cart with a matching security chip then you would need to patch the security on the game for the chip of your donor cart. Apoc did this but his work is not public, so you would be on your own to crack and reverse the security.