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view level2/modules/kernel/fgblkmp.asm @ 1145:ca83286ded5b

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Start of new OS-9 L2 Kernel
author boisy
date Tue, 22 Apr 2003 19:35:48 +0000
parents
children 1da8ab9ba433
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* F$GBlkMp entry point
FGBlkMp  ldd   #DAT.BlSz   # bytes per MMU block (8k)
         std   R$D,u       Put into caller's D register
         ldd   <D.BlkMap+2 Get end of system block map ptr
         subd  <D.BlkMap   Subtract start of system block map ptr
         std   R$Y,u       Store size of system block map in caller's Y reg.
         tfr   d,y
         lda   <D.SysTsk   Get system task #
         ldx   <D.Proc     Get caller's task #
         ldb   P$Task,x    get task # of caller
         ldx   <D.BlkMap   Get start ptr of system block map
L0978    ldu   R$X,u       Get addr to put it that caller requested
         os9   F$Move      Move it into caller's space
         rts