Kernel 0.92

BIN/SHELL.S.CL.txt

@@ -273,7 +273,7 @@ CL.PrintCmdBuf	>LDYA ZPCLBuf
 				rts
 *--------------------------------------
 CL.GetLine		>LDYA ZPFileBufPtr
-				>STYA.G ZPFileBufPtrBak
+				>STYA ZPFileBufPtrBak
 				
 				lda (ZPFileBufPtr)
 				beq .9

BIN/SHELL.S.CMD.txt

@@ -1027,20 +1027,21 @@ CMD.IsSwitch	>STYA ZPPtr1
 				sec				
 				rts
 *--------------------------------------
-CMD.StkPushPtr	>LDA.G ZPFileBufPtrBak
+CMD.StkPushPtr	lda ZPFileBufPtrBak
 				jsr CMD.StkPush
-				bcs .9
+				bcs CMD.StkPullPtr.9
-				>LDA.G ZPFileBufPtrBak+1
+				lda ZPFileBufPtrBak+1
-				jmp CMD.StkPush
+				bra CMD.StkPush
 .9				rts				
 *--------------------------------------
 CMD.StkPullPtr	jsr CMD.StkPull
-				bcs .9
+				bcs CMD.StkPullPtr.9
 				sta ZPFileBufPtr+1
 				jsr CMD.StkPull
-				bcs .9
+				bcs CMD.StkPullPtr.9
 				sta ZPFileBufPtr
-.9				rts				
+CMD.StkPullPtr.9		
+				rts				
 *--------------------------------------
 CMD.StkGetPtr	lda (pData)				StackPtr
 				beq .9

SYS/KERNEL.S.CORE.txt

@@ -25,7 +25,9 @@ CORE.Run		stz CORE.PSIndex
 				eor #S.PS.F.HOLD		unmark as HOLD
 				sta (pPs)
 				
-.2				jsr CORE.PSExec			INIT/RUN/QUIT/RESUME
+.2				jsr CORE.PSSelect		Restore ZP & Ptrs
+
+.3				jsr CORE.PSExec			INIT/RUN/QUIT/RESUME
 				dec IRQ.InKernel
 				
 				bcc .61					Error ?
@@ -56,7 +58,7 @@ CORE.Run		stz CORE.PSIndex
 				and #$3F				$ff^S.PS.F.INIT+S.PS.F.RUN
 				ora #S.PS.F.QUIT
 				sta (pPs)
-				bra .7
+				bra .3					try executing QUIT now...
 				
 .61				lda (pPs)
 				bit #S.PS.F.SLEEP
@@ -74,7 +76,6 @@ CORE.Run		stz CORE.PSIndex
 				
 				ldy #S.PS.PID
 				lda (pPs),y
-				beq *
 				jsr CORE.PSFree
 				bra .8
 				
@@ -452,9 +453,7 @@ CORE.PSLeave	ldy #S.PS.ZP+ZPBIN.SIZE-1
 				
 				rts
 *--------------------------------------
-CORE.PSExec		jsr CORE.PSSelect		Restore ZP & Ptrs
+CORE.PSExec		lda (pPS)
-
-				lda (pPS)
 				bit #S.PS.F.SLEEP
 				bne CORE.PSResume
 				

SYS/KERNEL.S.ENV.txt

@@ -180,18 +180,16 @@ ENV.Search.DRV	ldx #2
 				.HS 2C					BIT ABS
 ENV.Search.PATH	ldx #4
 
-				sty .1+1
+				>STYA ZPPtr1
-				sta .2+1
 				
 				>LDYA ENV.VARS,x
 				
-				jsr K.GetEnv			get value for Search Path
+				jsr ENV.FindVarP1		get value for Search Path
 				bcs K.FileSearch.RTS
 				
 				>STYA ENV.SearchPath
 
-.1				ldy #$ff				SELF MODIFIED
+				>LDYA ZPPtr1
-.2				lda #$ff				SELF MODIFIED
 				
 ENV.Search.YA	>STYA .4+1
 

SYS/KERNEL.S.MEM.txt

@@ -20,6 +20,10 @@ ZPSListDataPtr 	.EQ ZPMEMMGR+14
 *  CS :
 *   A = EC
 *\--------------------------------------
+MEM.ReqFlags	.BS 1					store requested Flags
+MEM.BestSlot	.BS 1
+MEM.BestScore	.BS 2
+*--------------------------------------
 K.GetMem0		ldx #S.MEM.F.INIT0
 				.HS 2C					bit abs
 */--------------------------------------
@@ -34,7 +38,7 @@ K.GetMem0		ldx #S.MEM.F.INIT0
 *\--------------------------------------
 K.GetMem		ldx #0
 				
-MEM.GetMem.YAX	stx Mem.ReqFlags
+MEM.GetMem.YAX	stx MEM.ReqFlags
 				sta ZPMemMgrSize+1
 
 				tya
@@ -52,6 +56,11 @@ MEM.GetMem.YAX	stx Mem.ReqFlags
 				>LDYAI Mem.Table
 				>STYA ZPMemMgrSPtr
 				
+				stz MEM.BestSlot
+				ldx #$ff
+				stx MEM.BestScore
+				stx MEM.BestScore+1
+				
 				ldx #0					Current slot=0
 
 				bra .4					skip slot 0, Check if some free slot to reuse first
@@ -61,7 +70,7 @@ MEM.GetMem.YAX	stx Mem.ReqFlags
 				lda (ZPMemMgrSPtr)		Get Flags
 				bmi .4					in use ?
 				
-.2				lda Mem.ReqFlags		Found an empty slot
+.2				lda MEM.ReqFlags		Found an empty slot
 				and #S.MEM.F.ALIGN		is request needs a page align ?
 				beq .3
 				
@@ -70,21 +79,44 @@ MEM.GetMem.YAX	stx Mem.ReqFlags
 				bne .4					not page-aligned
 				
 .3				ldy #S.MEM.LEN
+				sec
 				lda (ZPMemMgrSPtr),y	get LEN of this block
-				cmp ZPMemMgrSize		compare with requested size
+				sbc ZPMemMgrSize		compare with requested size
-				bne .4
+				pha
 				
 				iny
 				lda (ZPMemMgrSPtr),y
-				cmp ZPMemMgrSize+1
+				sbc ZPMemMgrSize+1
-				beq .7					requested size matches slot size !!!
+				ply						Y,A = SlotLen - ReqSize
+
+				bcc .4					req size > slot size
+
+				cpy MEM.BestScore
+				pha
+				sbc MEM.BestScore+1
+				pla
+				bcs	.4					Delta is >= BestScore	
+
+				bne .4					Delta is > 255...
+				
+				sty MEM.BestScore
+				sta MEM.BestScore+1
+				stx MEM.BestSlot
 				
 .4				cpx Mem.LastSlot		any other slot to check?
 				bne .1					last one, create a new slot
 				
+				lda MEM.BestSlot
+				beq .5
+				
+				tax
+				jsr K.GetMemByID
+				
+				bra .7
+				
 *-------------- Create a New SLOT
 
-.5				lda Mem.ReqFlags
+.5				lda MEM.ReqFlags
 				and #S.MEM.F.ALIGN		is request needs a page align ?
 				beq .6
 				
@@ -107,7 +139,7 @@ MEM.GetMem.YAX	stx Mem.ReqFlags
 				
 *-------------- Reuse this SLOT
 
-.7				lda Mem.ReqFlags		get requested flags
+.7				lda MEM.ReqFlags		get requested flags
 				ora #S.MEM.F.INUSE		mark as in use
 				sta (ZPMemMgrSPtr)
 				
@@ -164,8 +196,6 @@ MEM.GetMem.YAX	stx Mem.ReqFlags
 				
 .9				rts						
 *--------------------------------------
-Mem.ReqFlags	.BS 1					store requested Flags
-*--------------------------------------
 * Mem.AddSlot
 *  In:
 *   Y,A = Requested size