454af27b5c
support. Changes are rather simplifications of the SCRIPTS interface (prior to complexifying it again;) ), dead code removes and comment fixes. Code removed: - Handling of kernel variables referenced from SCRIPTS. - Handling of selection without ATN. Slightly rewritten: - Handling of illegal phase (4/5) and data overrun conditions. Simplifications: - Extended error flag and bits now only set from the C code. - Move the extended error status (xerr_status) and nego status (nego_status) outside the data structure accessed by SCRIPTS (struct dsb). - Get rid of the script status field (scr_st). - Only patch SCR_NO_OP SCRIPTS instructions to adapt SCRIPTS to actual chip capabilities. Cosmetic changes: - Miscellaneous comments in SCRIPTS. - FreeBSD_4_Bus define replaced by FreeBSD_Bus_Io_Abstraction.
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