added size optimized monochrom soft80 driver

2015-10-19 02:49:32 +02:00
parent d6d016bb80
commit 60334c40e6
7 changed files with 674 additions and 0 deletions
--- a/libsrc/c64/soft80mono_kclrscr.s
+++ b/libsrc/c64/soft80mono_kclrscr.s
@@ -0,0 +1,63 @@
+;
+; Groepaz/Hitmen, 19.10.2015
+;
+; lowlevel kclrscr for the monochrome soft80 implementation
+;
+
+        .export         soft80mono_kclrscr
+        .import         soft80mono_kplot
+        .import         soft80mono_internal_bgcolor, soft80mono_internal_cellcolor
+        .importzp       ptr1
+
+        .include        "c64.inc"
+        .include        "soft80.inc"
+
+soft80mono_kclrscr:
+
+        lda     #<soft80_bitmap
+        sta     ptr1
+        lda     #>soft80_bitmap
+        sta     ptr1+1
+
+        lda     #$ff
+
+        ldx     #$1f
+@lp2:
+        ldy     #0
+@lp1:
+        sta     (ptr1),y
+        iny
+        bne     @lp1
+        inc     ptr1+1
+        dex
+        bne     @lp2
+
+        ;ldx     #$00
+@lp3:
+        sta     soft80_bitmap+$1e40,x
+        inx
+        bne     @lp3
+
+        sei
+        ldy     $01
+        lda     #$34                            ; enable RAM under I/O
+        sta     $01
+
+        lda     soft80mono_internal_cellcolor
+        ; clear loop for vram
+        ;ldx     #$00
+@lp4:
+        sta     soft80_vram,x
+        sta     soft80_vram+$100,x
+        sta     soft80_vram+$200,x
+        sta     soft80_vram+$2e8,x
+        inx
+        bne     @lp4
+
+        sty     $01
+        cli
+
+        ldx     #0
+        ldy     #0
+        clc
+        jmp     soft80mono_kplot