PCEngineFans.com - The PC Engine and TurboGrafx-16 Community Forum
NEC PC-Engine/SuperGrafx => PC Engine/SuperGrafx Discussion => Topic started by: akirashinigami on October 20, 2007, 01:04:41 PM
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What exactly was the difference between them?
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CDROM games run with the system card that came with the CD attachment. Super CDROMs required a different system card that was released separately later. This card was basically a new DOS and some RAM.
When the Duo was released it included all the Super CD capabilities.
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The original CD unit didn't have adequate ram which restricted games and increased load times. The SCD increased the memory by 4 times. I should point out that most CD games are guilty of wasting memory (ram) - because they didn't even bother compress graphics which would have made room for more animation and tiles/sprites :/ Some of the later regular CD games were very efficient though like Valis 3, (and especially ) Valis 4, the first Spriggan. SCD games like GOT and LOT used compression through out the game - I wish more SCD games did this.
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In addition to what has already been said, here's the numbers for you (including one you didn't ask for, 'cause I'm feeling generous).
CD-ROM: .25 megabits o' memory
Super CD-ROM: 2 megabits o' memory
Arcade CD-ROM: 18 megabits o' memory