schematics:megadrivecart
Differences
This shows you the differences between two versions of the page.
Next revisionBoth sides next revision | |||
schematics:megadrivecart [2005/11/09 06:44] – created 195.149.50.76 | schematics:megadrivecart [2005/11/09 11:40] – aidanii | ||
---|---|---|---|
Line 33: | Line 33: | ||
|A28|D04|Data 4|-|B28|!LDS|Lower data strobe| | |A28|D04|Data 4|-|B28|!LDS|Lower data strobe| | ||
|A29|D03|Data 3|-|B29|!UDSW|Upper data strobe| | |A29|D03|Data 3|-|B29|!UDSW|Upper data strobe| | ||
- | |A30|D11|Data 11|-|B30|!SRST|!M3| | + | |A30|D11|Data 11|-|B30|!SRST|!M3 |
|A31|5v|VCC1|-|B31|!TIME|Unknown| | |A31|5v|VCC1|-|B31|!TIME|Unknown| | ||
- | |A32|GND|Ground|-|B32|!C_DTCT|!CART| | + | |A32|GND|Ground|-|B32|!C_DTCT|Cart detect - disables onboard ROM(s)| |
Line 42: | Line 42: | ||
Address and Data busses are from the 68000 perspective.\\ | Address and Data busses are from the 68000 perspective.\\ | ||
VCC1 supplies power to the 68000 and the YM2612 and possibly some other minor parts.\\ | VCC1 supplies power to the 68000 and the YM2612 and possibly some other minor parts.\\ | ||
- | VCC2 supplies power to the Z80, memory and custom chips.\\ | + | VCC2 supplies power to the Z80, memory and custom chips. They are generated by two seperate voltage regulators. \\ |
- | They are generated by two seperate voltage regulators.\\ | + | CLK and HS_CLK are not synchronous, |
- | CLK and HS_CLK are not synchronous, | + |
schematics/megadrivecart.txt · Last modified: 2019/08/27 20:45 by 127.0.0.1