Add memcpy and code skeleton for text.s

wip-hugo/macros/16aritmatic.s

@@ -90,7 +90,7 @@
 ;;Larger then operation, uses the A register
 ;;IF a < b then: jump to label
 ; C =0 if jump to LABEL
-.macro Lag_16 a_low, a_hi, b_low, b_hi, label ; [low, hi] = [low, hi]*2
+.macro Lag_16 a_low, a_hi, b_low, b_hi, label
         LDA a_hi
         CMP b_hi
         BCC label
@@ -100,3 +100,27 @@
         BCC label
         LABEL:
 .endmacro
+
+
+;.macro Lag_16y a_hi, b_hi,b_low, label
+;        LDA a_hi
+;        CMP b_hi
+;        BCC label
+;        BNE LABEL
+;        ;LDA a_low
+;        CPY b_low
+;        BCC label
+;        LABEL:
+;.endmacro
+.macro Lag_16y a_low, a_hi, b_hi, label
+        LDA a_hi
+        CMP b_hi
+        BCC label
+        BNE LABEL
+        LDA a_low
+        STY next +1
+next:
+        CMP #$ff
+        BCC label
+        LABEL:
+.endmacro

wip-hugo/routines/memory/memcpy.s

@@ -0,0 +1,40 @@
+;;; -*- Mode: asm; indent-tabs-mode: t; tab-width: 8 -*-
+
+;;############ HANDLES BIG MEMORY MANAGMENTS ############
+;;Move memory from B_start B_end to A_start , (implied address)
+;; B_start and B_end gets modified under execution.
+.proc memcpy
+        A_start = $FAFB
+        B_start = $FCFD
+        B_end = $FEFF
+
+        ;; Let Y + A_start lower nibble represent A_start
+        ;; therefor: A_start = Y - A_start
+        ;; With Y we mean what Y will represent later aka >B_start
+        Sub_16 >A_start, <A_start, >B_start, #$00
+
+        ;;Lets move B_start lover-nibble to Y
+        LDY >B_start
+        LDA #$00
+        STA >B_start
+loop:
+        ;Lag_16 >B_end, <B_end, >B_start, <B_start, end_loop
+        Lag_16y >B_end, <B_end, <B_start, end_loop
+        ;Lag_16y <B_start, >B_end, <B_end, end_loop ; IF B_end >B_start stop the loop
+        LDA (>B_start), Y
+        STA (>A_start), Y
+        ;Tip save time by counting downward, fast to check if Y ==0 // hugo
+        INY
+        TYA
+        CMP #$ff
+        BNE loop
+        ;BPL loop; Branch if Y dont overflow
+        ;; Fix overflow
+        ;LDX #$23
+        LDY #$00
+        INC <A_start
+        INC <B_start
+        JMP loop
+end_loop:
+RTS
+.endproc

wip-hugo/routines/memory/memset.s

@@ -1,7 +1,7 @@
 ;;; -*- Mode: asm; indent-tabs-mode: t; tab-width: 8 -*-
 
-;;##### HANDLES BIG MEMORY MANAGMENTS ############
+;;############ HANDLES BIG MEMORY MANAGMENTS ############
-;;Sets big barts of memory to a certain byte.
+;;Sets big parts of memory to a certain byte.
 .proc memset
         Address_start = $FBFC
         Address_end =  $FDFE

wip-hugo/routines/text/text.s

@@ -1 +1,17 @@
+;;; -*- Mode: asm; indent-tabs-mode: t; tab-width: 8 -*-
 ;; petski: https://www.c64-wiki.com/wiki/File:ASCII-Codes.gif
+;; d000
+.proc text
+        ;; TESTING OF MEMCPY TEMPERARLY HERE BECAUSE IT WILL USE THAT :)
+        A_start = $FAFB
+        B_start = $FCFD
+        B_end = $FEFF
+
+        Mov_16 >B_start, <B_start,  #<$D000, #>$D000
+        Mov_16 >B_end, <B_end,  #<($D000+$1F3F), #>($D000 +$1F40)
+
+        Mov_16 >A_start, <A_start, #<VIC_bank, #>VIC_bank
+        ;Mov_16 >A_end, >A_end,  #<(VIC_bank+100),  #>(VIC_bank +100)
+        JSR memcpy
+        RTS
+.endproc

wip-hugo/source.s

@@ -1,12 +1,15 @@
+.debuginfo      +       ; Generate debug info
 .include "macros/16aritmatic.s"
 .include "macros/timer.s"
 
 .include "STARTUP.s"
-.include "routines/line/line_test_time.s"
+;.include "routines/line/line_test_time.s"
-
+jsr text
 ;;This is used by .s files to terminate nicely without reading includes at the end!
 exit:
 jmp exit
 
+.include "routines/text/text.s"
 .include "routines/memory/memset.s"
 .include "routines/memory/pixel_draw.s"
+.include "routines/memory/memcpy.s"