Metal Gear Solid 5 cassette tape

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By Guillian

Prophet (3457)

Guillian's picture

21-09-2015, 17:43

Samor wrote:

And "Take On Me" from A-Ha can be found in the game, but the song is from 1985 ;-)

And "Friday I'm in love" (The Cure) from 1992 (^^!)

By Takashio

Supporter (13)

Takashio's picture

21-09-2015, 19:29

OneEyed_Jack wrote:

Or maybe it's Okhotsk ni Kiyu. This is the continuation of Portopia (VOL2 ??). This game was released in 1984 on PC-8801.

VOL2 is the header name for the second section of the game (VOL1 just loads the intro)

EDIT: Someone read the twitter conversation and recorded the start of an original Portopia tape https://www.youtube.com/watch?v=ioHCHEoi1Pw

By mrgaytes

Supporter (8)

mrgaytes's picture

22-09-2015, 07:19

Hello everyone, lately this forum is getting alot of attention from diehard MGS fans and I'd first like to say on their behalf that we really appreciate the oldtimers here giving us a massive help. Smile

I have a few questions for Takashio (or anyone else willing). Its becoming increasingly likely that Venom Snake inserted a PC-6001 cassette tape into a MSX-2 machine for a purpose we can't understand yet, even though it seems like a very strange thing for Venom Snake to do. I think that Kojima did this intentionally so that we can try to boot the loader ourselves, however I have no idea how to do this.

How did you and tiny_yarou obtain this loader? Is it possible for anyone to grab a copy of what you guys did? Will the loader actually boot into the game or is it filled with too much junk data? Are we able to look into this ourselves using emulation? Any help would be appreciated, thanks.

By Takashio

Supporter (13)

Takashio's picture

22-09-2015, 17:46

mrgaytes wrote:

I have a few questions for Takashio (or anyone else willing). Its becoming increasingly likely that Venom Snake inserted a PC-6001 cassette tape into a MSX-2 machine for a purpose we can't understand yet, even though it seems like a very strange thing for Venom Snake to do. I think that Kojima did this intentionally so that we can try to boot the loader ourselves, however I have no idea how to do this.

My results can be performed by converting the existing ripped audio file to 8-bit WAV, and using P6DataRec to make a P6 tape. Opening the P6 file in an hex editor will give the data similar to what I shared. I don't share my data because I don't want to share a file where people start seeing "patterns" on something with a 25% error rate. In my opinion as a "oldtimer", the data is too unreliable for anything but the most basic of forensic analysis.

If you run P6DataRec with slightly different parameters and the BASIC output option on, you might get a .txt file with some mangled code:

10794 *****************
20 REM* サスヘ゜ンス アト゛ヘ゛ンチャー 1 *
30 REM*        ー(CTRL-M)め   *
51772 
8224   BY YUJI HORII   *
14759 HEX$**************
65535 CLEAR 50,&HEFFF:EXECPEEK(&HFF5w(CTRL-M):*dff
70 CLEAR200,&HD18RETURNPLAYNzLLIST,16,0
80 ItCONSOLE8:POKEI,&HC3:POKEI+1,&HEA:POKEI+2,&HDF@y=,060:POKEI+1,0
100 POKE&(↓)9STR$
110 SCREEN 4,2,2:POKE&HFD92wCONT16:COLOR 1,4,2:CLS
49784 .RSETMKS$(70,70),2,BF
130 LINE(145,5LET]HEX$,3,BF
140 POKE&HFD92,3:COLOR 0:!(CTRL-M)PAD          0”
62265 CHR$ RSETLOGBSAVE>STR$ TANCONTSTOPPEEKLPRINTMKS$ SCRESCREEN_(0xFD)”
160 PRINT”COLOR は きかい によっの て゛かたか゛”
170 PRINT2SINCONTLOG(0xFF)TALK(0xFA) SINREMOそせめ を します。”z*058
38336 :PRINT” せちか゛ あ゜ンク)に みえますか7or0ゥ.t「メ&H(↑)たtをセ
50898 :(0xFA)*”ヌえADハ2,2:えADハモょyうHDFFF,0:タそをネ
53796 ”0rムハ2,3:えADハモょyうHDFFF,1せに20
210 190
220 POKEACONT1:POKEAD+4,4ASC0=PEEK(&hLINEt+KANJIREADSTR$
12529 TO50:NEXT=DFFLIST(↑)9r(←)yDEFHDFF3,&HRUN7:VALPOKETALKDSKI$5,16
240 XREXPASC0:Y=1STRIG^sLLIST
12634 30+C0:Y=50
260 =200+CHk(↑)COSCOLORLOCATE^(ホーム。カーソルを左上に戻す)PRINT”/ ホょく。”:PRINT”   ろぃ

The japanese strings look like fragments of Portopia mode select.

You can also open and execute the file in an emulator, but it will never run anything, as the input is gibberish and only a fraction of the data is there. Even getting it to recognize the header is a challenge.

Ok, now that I said this. You might notice that the audio file suddenly interrupts, and then plays for a short moment, then has an even shorter burst of data. In the P6 file you generate it shows up as the following bytes at the end of the file.

(silence) 0x2F 0x7F 0xCE 0x8E 0x98 0xA1 (0x22?) 0x3A 0x95 0x22 0x20 0x20 0xFE (silence) 0xFB(F7?) 0x88

By Grauw

Ascended (10179)

Grauw's picture

22-09-2015, 17:56

At 33 years of age, I guess I am an old-timer to those young kids... T_T Crying

By mrgaytes

Supporter (8)

mrgaytes's picture

22-09-2015, 18:17

Thanks for the response, so it can't be run inside an emulator without major issues. Did you obtain this data based on the audio file that was mixed with music or a clean rip?

Another thing: What does a PC-6001 outputs when it reads a corrupt/incomplete tape? Does it dump any debug errors?

By tvalenca

Paladin (747)

tvalenca's picture

22-09-2015, 19:02

Grauw wrote:

At 33 years of age, I guess I am an old-timer to those young kids... T_T Crying

At 34 age I, like you, feel like an old-timer to these young kids playing MMORPG and Online FPS (and Minecraft also), But I also have plenty 40-something friends with same interests as both of us (MSX) so I don't feel like this all the time. So, don't feel old, because you're far from it!

By Latok

msx guru (3843)

Latok's picture

22-09-2015, 19:34

So when you're 40-something, you're old. Thank you Cool

I know many young people with one dimensional lives... I feel pity for them. Thank god I grew up in the 80s and 90s with somewhat decent education and the beginning of the tech age.... Those were interesting times to grow up in. MSX is a part of it...

By Grauw

Ascended (10179)

Grauw's picture

22-09-2015, 19:39

Mid-life crisis commencing… Smile

By Takashio

Supporter (13)

Takashio's picture

22-09-2015, 19:41

mrgaytes wrote:

Thanks for the response, so it can't be run inside an emulator without major issues. Did you obtain this data based on the audio file that was mixed with music or a clean rip?

The clean rip.

mrgaytes wrote:

Another thing: What does a PC-6001 outputs when it reads a corrupt/incomplete tape? Does it dump any debug errors?

Doesn't do anything. It will just say Ok if the data doesn't have a header. If it loads, then you can try to use run but it will just say "SN error?"

(I'm 34 - I guess most people in a MSX forum would be around my age)

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