Mercurial > hg > Members > kono > nitros9-code
view level2/modules/kernel/fdelram.asm @ 2758:e4a0f58a5f9b
Found that people who do not have the envirornment variable NITROS9DIR set before building the project get a error missing file "/rules.mak". Found this is caused do to the fact that the code to set this envirornment variable is in the rules.mak which can't get loaded.
To fix this the code needed to set the envirornment variable that is in the rules.mak is now in the makefile(s) right before the include for the rules.mak file. This should fix the problem for those who do not have the NITROS9DIR envirornment variable preset.
| author | drencor-xeen |
|---|---|
| date | Mon, 14 Jan 2013 14:37:46 -0600 |
| parents | 1451bc7ef0b9 |
| children | 039ddb7c8ad7 |
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************************************************** * System Call: F$DelRAM * * Function: Deallocate RAM blocks * * Input: B = Number of blocks * X = Beginning block number * * Output: None * * Error: CC = C bit set; B = error code * FDelRAM ldb R$B,u # of blocks to de-allocate beq DelRAM.2 if none, exit ldd <D.BlkMap+2 get end of the block map subd <D.BlkMap subtract out start of the block map subd R$X,u take out starting block number bls DelRAM.2 exit if the starting block is ># of blocks available tsta check high byte of RAM # bne DelRAM.0 if not zero, skip it cmpb R$B,u check against size of the block bhs DelRAM.0 if size is >RAM available stb R$B,u save actual # of blocks deleted DelRAM.0 ldx <D.BlkMap get start address of the block map ldd R$X,u starting address of the RAM to de-allocate leax d,x slower, but smaller than ADDR ldb R$B,u get actual # of blocks to de-allocate DelRAM.1 equ * IFNE H6309 aim #^RAMinUse,,x+ set to RAM not in use ELSE lda ,x anda #^RAMinUse sta ,x+ ENDC decb count down a block bne DelRAM.1 continue DelRAM.2 clrb and exit rts