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Lines 213-219
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| 213 |
modes. |
213 |
modes. |
| 214 |
The computer acts as master and the peripheral as slave. |
214 |
The computer acts as master and the peripheral as slave. |
| 215 |
.Pp |
215 |
.Pp |
| 216 |
Any transfer is defined as a finite state automate. |
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Any transfer is defined as a finite state machine. |
| 217 |
It allows software to |
217 |
It allows software to |
| 218 |
properly manage the fully interlocked scheme of the signaling method. |
218 |
properly manage the fully interlocked scheme of the signaling method. |
| 219 |
The compatible mode is supported "as is" without any negotiation because it |
219 |
The compatible mode is supported "as is" without any negotiation because it |
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Lines 244-250
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| 244 |
termination, transfer in any mode without bothering you with low level |
244 |
termination, transfer in any mode without bothering you with low level |
| 245 |
characteristics of the standard. |
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characteristics of the standard. |
| 246 |
.Pp |
246 |
.Pp |
| 247 |
IEEE1284 interacts with the ppbus system as least as possible. |
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IEEE1284 interacts with the ppbus system as little as possible. |
| 248 |
That means |
248 |
That means |
| 249 |
you still have to request the ppbus when you want to access it, the negotiate |
249 |
you still have to request the ppbus when you want to access it, the negotiate |
| 250 |
function doesn't do it for you. |
250 |
function doesn't do it for you. |
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Lines 288-294
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| 288 |
This architecture should support IEEE1284-1994 modes. |
288 |
This architecture should support IEEE1284-1994 modes. |
| 289 |
.Sh FEATURES |
289 |
.Sh FEATURES |
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.Ss The boot process |
290 |
.Ss The boot process |
| 291 |
The boot process starts with the probe phasis of the |
291 |
The boot process starts with the probe stage of the |
| 292 |
.Xr ppc 4 |
292 |
.Xr ppc 4 |
| 293 |
driver during ISA bus (PC architecture) initialization. |
293 |
driver during ISA bus (PC architecture) initialization. |
| 294 |
During attachment of |
294 |
During attachment of |