Sonic the Hedgehog CD (Aug 1, 1993 prototype): Difference between revisions

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==Videos==
==Videos==
<youtube width="320" height="240">AoDQv-rlCl8</youtube>
<youtube width="320" height="240">AoDQv-rlCl8</youtube>
==Files==
{{filelist|
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{{filelistentry | no= 2 |icon= text |filename= Sonic the Hedgehog CD (Aug 1, 1993 prototype).cue |type= Track list | size= 2391 |crc32= 0b790bce |md5= 78f500e2932198b2a40811935f3d9828 |sha1= 11bd0bb10179a032b35f1290552992625254ebaa }}
{{filelistentry | no= 3 |filename= Sonic the Hedgehog CD (Aug 1, 1993 prototype).img |type= Disc data | size= 583441824 |crc32= f2aa2ed9 |md5= e6ceebd321c0d2b743274dffccb43d33 |sha1= a284870b1cfe8c43c48969a6b229f807b79028e2 }}
{{filelistentry | no= 4 |filename= Sonic the Hedgehog CD (Aug 1, 1993 prototype).sub |type= Disc data | size= 23813952 |crc32= 0f8c1d78 |md5= 775b9cede0d64da364b6dfc34100e32d |sha1= 7a35aab38fa2a2f0f9fcd6acfd9c7a78ad46ac9e }}
|numbered=y}}
==Header==
<span class="hex-snippet">00000100  <span class="hover-link link-system-name" data-title="System name" title="Sega Mega Drive">53 45 47 41 20 4d 45 47</span>  <span class="hover-link link-system-name" data-title="System name" title="Sega Mega Drive">41 20 44 52 49 56 45 20</span>  <span class="hover-link link-system-name" data-title="System name" title="Sega Mega Drive">SEGA MEGA DRIVE </span>
00000110  <span class="hover-link link-developer-and-date" data-title="Developer and date" title="Sega, August 1993">28 43 29 53 45 47 41 20</span>  <span class="hover-link link-developer-and-date" data-title="Developer and date" title="Sega, August 1993">31 39 39 33 2e 41 55 47</span>  <span class="hover-link link-developer-and-date" data-title="Developer and date" title="Sega, August 1993">(C)SEGA 1993.AUG</span>
00000120  <span class="hover-link link-domestic-game-name" data-title="Domestic game name" title="Sonic The Hedgehog-CD">53 4f 4e 49 43 20 54 48</span>  <span class="hover-link link-domestic-game-name" data-title="Domestic game name" title="Sonic The Hedgehog-CD">45 20 48 45 44 47 45 48</span>  <span class="hover-link link-domestic-game-name" data-title="Domestic game name" title="Sonic The Hedgehog-CD">SONIC THE HEDGEH</span>
00000130  <span class="hover-link link-domestic-game-name" data-title="Domestic game name" title="Sonic The Hedgehog-CD">4f 47 2d 43 44 20 20 20</span>  <span class="hover-link link-domestic-game-name" data-title="Domestic game name" title="Sonic The Hedgehog-CD">20 20 20 20 20 20 20 20</span>  <span class="hover-link link-domestic-game-name" data-title="Domestic game name" title="Sonic The Hedgehog-CD">OG-CD          </span>
00000140  <span class="hover-link link-domestic-game-name" data-title="Domestic game name" title="Sonic The Hedgehog-CD">20 20 20 20 20 20 20 20</span>  <span class="hover-link link-domestic-game-name" data-title="Domestic game name" title="Sonic The Hedgehog-CD">20 20 20 20 20 20 20 20</span>  <span class="hover-link link-domestic-game-name" data-title="Domestic game name" title="Sonic The Hedgehog-CD">                </span>
00000150  <span class="hover-link link-international-game-name" data-title="International game name" title="Sonic The Hedgehog-CD">53 4f 4e 49 43 20 54 48</span>  <span class="hover-link link-international-game-name" data-title="International game name" title="Sonic The Hedgehog-CD">45 20 48 45 44 47 45 48</span>  <span class="hover-link link-international-game-name" data-title="International game name" title="Sonic The Hedgehog-CD">SONIC THE HEDGEH</span>
00000160  <span class="hover-link link-international-game-name" data-title="International game name" title="Sonic The Hedgehog-CD">4f 47 2d 43 44 20 20 20</span>  <span class="hover-link link-international-game-name" data-title="International game name" title="Sonic The Hedgehog-CD">20 20 20 20 20 20 20 20</span>  <span class="hover-link link-international-game-name" data-title="International game name" title="Sonic The Hedgehog-CD">OG-CD          </span>
00000170  <span class="hover-link link-international-game-name" data-title="International game name" title="Sonic The Hedgehog-CD">20 20 20 20 20 20 20 20</span>  <span class="hover-link link-international-game-name" data-title="International game name" title="Sonic The Hedgehog-CD">20 20 20 20 20 20 20 20</span>  <span class="hover-link link-international-game-name" data-title="International game name" title="Sonic The Hedgehog-CD">                </span>
00000180  <span class="hover-link link-serial" data-title="Serial" title="GM G-6021-10 1">47 4d 20 47 2d 36 30 32</span>  <span class="hover-link link-serial" data-title="Serial" title="GM G-6021-10 1">31 2d 31 30 20 31</span> <span class="hover-link link-checksum" data-title="Checksum" title="0x3530">30 35</span>  <span class="hover-link link-serial" data-title="Serial" title="GM G-6021-10 1">GM G-6021-10 1</span><span class="hover-link link-checksum" data-title="Checksum" title="0x3530">05</span>
00000190  <span class="hover-link link-io-support" data-title="I/O support" title="Joypad">4a 20 20 20 20 20 20 20</span>  <span class="hover-link link-io-support" data-title="I/O support" title="Joypad">20 20 20 20 20 20 20 20</span>  <span class="hover-link link-io-support" data-title="I/O support" title="Joypad">J              </span>
000001a0  <span class="hover-link link-rom-start-address" data-title="ROM start address" title="0x20202020">20 20 20 20</span> <span class="hover-link link-rom-end-address" data-title="ROM end address" title="0x20202020">20 20 20 20</span>  <span class="hover-link link-ram-start-address" data-title="RAM start address" title="0x20202020">20 20 20 20</span> <span class="hover-link link-ram-end-address" data-title="RAM end address" title="0x20202020">20 20 20 20</span>  <span class="hover-link link-rom-start-address" data-title="ROM start address" title="0x20202020">    </span><span class="hover-link link-rom-end-address" data-title="ROM end address" title="0x20202020">    </span><span class="hover-link link-ram-start-address" data-title="RAM start address" title="0x20202020">    </span><span class="hover-link link-ram-end-address" data-title="RAM end address" title="0x20202020">    </span>
000001b0  <span class="hover-link link-external-ram-data" data-title="External RAM data" title="No external RAM mounted">20 20 20 20 20 20 20 20</span>  <span class="hover-link link-external-ram-data" data-title="External RAM data" title="No external RAM mounted">20 20 20 20</span> <span class="hover-link link-modem-data" data-title="Modem data" title="No modem support">20 20 20 20</span>  <span class="hover-link link-external-ram-data" data-title="External RAM data" title="No external RAM mounted">            </span><span class="hover-link link-modem-data" data-title="Modem data" title="No modem support">    </span>
000001c0  <span class="hover-link link-modem-data" data-title="Modem data" title="No modem support">20 20 20 20 20 20 20 20</span>  <span class="hover-link link-memo" data-title="Memo" title="&nbsp;">20 20 20 20 20 20 20 20</span>  <span class="hover-link link-modem-data" data-title="Modem data" title="No modem support">        </span><span class="hover-link link-memo" data-title="Memo" title="&nbsp;">        </span>
000001d0  <span class="hover-link link-memo" data-title="Memo" title="&nbsp;">20 20 20 20 20 20 20 20</span>  <span class="hover-link link-memo" data-title="Memo" title="&nbsp;">20 20 20 20 20 20 20 20</span>  <span class="hover-link link-memo" data-title="Memo" title="&nbsp;">                </span>
000001e0  <span class="hover-link link-memo" data-title="Memo" title="&nbsp;">20 20 20 20 20 20 20 20</span>  <span class="hover-link link-memo" data-title="Memo" title="&nbsp;">20 20 20 20 20 20 20 20</span>  <span class="hover-link link-memo" data-title="Memo" title="&nbsp;">                </span>
000001f0  <span class="hover-link link-regions" data-title="Regions" title="Japan">4a 20 20 20 20 20 20 20</span>  <span class="hover-link link-regions" data-title="Regions" title="Japan">20 20 20 20 20 20 20 20</span>  <span class="hover-link link-regions" data-title="Regions" title="Japan">J              </span>
</span>


==Origin==
==Origin==

Revision as of 07:29, December 28, 2017

Title Screen
Sonic the Hedgehog CD (Aug 1, 1993 prototype)
Build date Aug 1, 1993 16:24:41
Dump status Released
Dumped by drx
Released by drx
Origin CD-R
Labels Sonic CD 8/1/93 ver 1.05
Dump method CloneCD (3 dumps, drive: DS8A8SH)
Ownership drx (2017-Present)
Game Sonic the Hedgehog CD
System Sega CD
Genre Platform
Final build JP Aug 6, 1993
EU Aug 27, 1993
US Oct 12, 1993
Release date JP Sep 23, 1993
EU Oct 1, 1993
US Nov 19, 1993
Download Sonic the Hedgehog CD (Aug 1, 1993 prototype) (info)
Error: The download file provided does not exist, please upload it or fix the file name if it's incorrect.

A late prototype of Sonic the Hedgehog CD for the Sega CD.

Notes

The Cutting Room Floor research
  • Level select can be activated at the title screen by pressing B
  • Minor code changes in all files.
  • Wacky Workbench Act 2 (Past and Good Future) and Stardust Speedway Act 2 (Present and Good Future) contain the most differences in this build (R62B, R62C, R72A, R72C).

Quartz Quadrant Zone Act 3 (R53C__.MMD, R53D__.MMD)

The boss in both good and bad future has a different color

Good Future

Bad future

The background in Bad Future starts higher than in the final.

Visual mode (VM____.MMD)

In builds 712 and 801, there are 5 patterns that are loaded into the same place in Video RAM in succession (overwriting each other). The last pattern (#5) is changed between 712 and 801, fixing the OPENNING typo. Patterns #1-#4, which presumably show the development progression of the Visual Mode are removed in the final, leaving only pattern #5.

Pattern 712 801 Final Image
#1 Sonic CD VM text 1.png
#2 Sonic CD VM text 2.png
#3 Sonic CD VM text 3.png
#4 Sonic CD VM text 4.png
#5 Sonic CD VM text 5 712.png
#5 Sonic CD VM text 5.png

OPENNING typo

Screenshots

Videos

Files

# File Type Size SHA-1
1 Sonic the Hedgehog CD (Aug 1, 1993 prototype).ccd Track list 7.6 KB e9da0992bd2bad2e4c8739d2a83a6cedf4b22d2c
2 Sonic the Hedgehog CD (Aug 1, 1993 prototype).cue Track list 2.3 KB 11bd0bb10179a032b35f1290552992625254ebaa
3 Sonic the Hedgehog CD (Aug 1, 1993 prototype).img Disc data 556.41 MB a284870b1cfe8c43c48969a6b229f807b79028e2
4 Sonic the Hedgehog CD (Aug 1, 1993 prototype).sub Disc data 22.71 MB 7a35aab38fa2a2f0f9fcd6acfd9c7a78ad46ac9e


Header

00000100 53 45 47 41 20 4d 45 47 41 20 44 52 49 56 45 20 SEGA MEGA DRIVE 00000110 28 43 29 53 45 47 41 20 31 39 39 33 2e 41 55 47 (C)SEGA 1993.AUG 00000120 53 4f 4e 49 43 20 54 48 45 20 48 45 44 47 45 48 SONIC THE HEDGEH 00000130 4f 47 2d 43 44 20 20 20 20 20 20 20 20 20 20 20 OG-CD 00000140 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 00000150 53 4f 4e 49 43 20 54 48 45 20 48 45 44 47 45 48 SONIC THE HEDGEH 00000160 4f 47 2d 43 44 20 20 20 20 20 20 20 20 20 20 20 OG-CD 00000170 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 00000180 47 4d 20 47 2d 36 30 32 31 2d 31 30 20 31 30 35 GM G-6021-10 105 00000190 4a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 J 000001a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 000001b0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 000001c0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 000001d0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 000001e0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 000001f0 4a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 J

Origin