projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| 9174ab02 MC |
1 | ------------------------------------------------------------------------------- |
| 2 | SEGA Maple bus | |
| 3 | ------------------------------------------------------------------------------- | |
| 4 | ||
| 5 | This is a set of dumps of the SEGA Dreamcast Maple bus. | |
| 6 | ||
| 7 | For details see: | |
| 8 | http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=6,324,603.PN.&OS=PN/6,324,603&RS=PN/6,324,603 | |
| 9 | ||
| 10 | ||
| 11 | Logic analyzer setup | |
| 12 | -------------------- | |
| 13 | ||
| 14 | The logic analyzer used was a genuine Saleae Logic16 (at 20 MHz): | |
| 15 | ||
| 16 | Probe Maple bus | |
| 17 | --------------------- | |
| 18 | 1 SDCKA | |
| 19 | 5 SDCKB | |
| 20 | ||
| 21 | ||
| 22 | Data | |
| 23 | ---- | |
| 24 | ||
| 25 | Three different peripherals (a controller, a memory card, and a rumble | |
| 26 | pack) are probed using "Device Request" packets, each of which is | |
| 27 | replied to with a "Device status" packet. | |
| 28 |