Did game companies have chip making machines or were they able to create VDP/PPU chips using a logic gate chips?
I think usually if they had a custom chip design they would get a prominent electronics manufacturer to produce the chips for them, e.g. Ricoh, Fujitsu, Sharp, Intel, AMD, etc.
Monaco GP was made out of logic chips and separate PROM chips for each sprite graphic. It was Sega's last game to not use a CPU.
That is pretty impressive for discreet logic. How many logic chips did that game take?
psycopathicteen wrote:
discreet logic
psycopathicteen wrote:
That is pretty impressive for discreet logic. How many logic chips did that game take?
Lots.
I couldn't find a picture of the whole thing, but here's two of its boards, there's probably a few more:
http://forums.arcade-museum.com/showthread.php?t=272287Edit: Here's a video view in the back.
https://www.youtube.com/watch?v=8dEx3KCMeW8#t=9m40s
Revenant wrote:
I never realized these were different words in english. In portuguese it's just one word.
I have a Sega Turbo game, it has discrete video and audio. What surprised me was that it has a couple pots to adjust the scaling for the graphics (for the factory, but it's labeled in the manual). I was also a little amused that the audio board has pots to adjust the volume level for each sound effect.
I have Millipede also, it uses 6502 and 2 POKEYs but the video is discrete. The manual has a full schematic if you're ever curious to see how that works. When I look at the board's color PROMs I'm always a little bit in awe of how the board has turned dark around them from the heat.
Quote:
:shock: I never realized these were different words in english. In portuguese it's just one word.
Never realised either. Considering it's common for english words to have multiple acceptable spellings (something that is extremely rare in French - I know every one word that has two acceptable spellings), I never notice this kind of subtilities.
I never knew that either, and I'm a native English speaker...
It was only until "Fifty Shades of Grey" that I knew "gray" could be spelled as "grey"...
Memblers wrote:
I have a Sega Turbo game, it has discrete video and audio. What surprised me was that it has a couple pots to adjust the scaling for the graphics (for the factory, but it's labeled in the manual). I was also a little amused that the audio board has pots to adjust the volume level for each sound effect.
I have Millipede also, it uses 6502 and 2 POKEYs but the video is discrete. The manual has a full schematic if you're ever curious to see how that works. When I look at the board's color PROMs I'm always a little bit in awe of how the board has turned dark around them from the heat.
Somebody can almost make a tile based graphics circuit by just wiring up ROMs and RAMs to each other.
Bregalad wrote:
subtilities
Funny story - you just used an obscure variant of "subtleties" that most people would consider wrong...