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Diffstat (limited to 'src/machine.tex')
| -rw-r--r-- | src/machine.tex | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/src/machine.tex b/src/machine.tex index 25ce958..c43a9b8 100644 --- a/src/machine.tex +++ b/src/machine.tex @@ -278,8 +278,7 @@ microarchitectures. The convention adopted within the following Implementation field can be used to segregate branches of the same architecture design, including by organization. The {\tt misa} register also helps -distinguish different variants of a design, as does the configuration -string if present. +distinguish different variants of a design. \end{commentary} \subsection{Machine Implementation ID Register {\tt mimpid}} @@ -2377,10 +2376,7 @@ devices or to correctly configure other hardware components that access memory, such as DMA engines. As PMAs are tightly tied to a given physical platform's organization, many details are inherently platform-specific, as is the means by which software can learn the PMA -values for a platform. The configuration string -(Chapter~\ref{cfgstr}) can encode PMAs for on-chip devices and might -also describe on-chip controllers for off-chip buses that can be -dynamically interrogated to discover attached device PMAs. Some +values for a platform. Some devices, particularly legacy buses, do not support discovery of PMAs and so will give error responses or time out if an unsupported access is attempted. Typically, platform-specific machine-mode code will |