fix cpeekc/cpeekcolor/cpeekrevers/cpeeks for atmos, replaces what is in #532

libsrc/atmos/cpeekc.s

@@ -0,0 +1,21 @@
+;
+; 2016-02-28, Groepaz
+; 2017-06-19, Greg King
+;
+; char cpeekc (void);
+;
+; Atmos version
+;
+
+        .export         _cpeekc
+
+        .import         setscrptr
+        .importzp       ptr2
+
+
+_cpeekc:
+        jsr     setscrptr       ; Set ptr2 and .Y to the cursor's address
+        lda     (ptr2),y        ; Get char
+        and     #<~$80          ; Remove revers() bit
+        ldx     #>$0000
+        rts

libsrc/atmos/cpeekchar.s

@@ -1,30 +0,0 @@
-
-    .include    "atmos.inc"
-
-    .export _cpeekc
-
-_cpeekc:
-
-    ldy CURS_Y
-    ldx ScrTabLo,y
-    stx @l+1
-    ldx ScrTabHi,y
-    stx @l+2
-    ldx CURS_X
-@l:
-    lda $bb80,x
-;;  inc COORDX_TEXT
-    ldx #0
-    rts
-
-    ; FIXME: is that table available elsewhere?
-.rodata
-ScrTabLo:
-    .repeat 28, Line
-        .byte   <(SCREEN + Line * 40)
-    .endrep
-
-ScrTabHi:
-    .repeat 28, Line
-        .byte   >(SCREEN + Line * 40)
-    .endrep

libsrc/atmos/cpeekcolor.s

@@ -0,0 +1,10 @@
+;
+; 2017-06-03, Greg King
+;
+; unsigned char cpeekcolor (void);
+;
+; Atmos version
+;
+
+        .import         return1
+        .export         _cpeekcolor := return1  ; always COLOR_WHITE

libsrc/atmos/cpeekrevers.s

@@ -0,0 +1,22 @@
+;
+; 2017-06-08, Greg King
+;
+; unsigned char cpeekrevers (void);
+;
+; Atmos version
+;
+
+        .export         _cpeekrevers
+
+        .import         setscrptr
+        .importzp       ptr2
+
+
+_cpeekrevers:
+        jsr     setscrptr       ; Set ptr2 and .Y to the cursor's address
+        lda     (ptr2),y        ; Get char
+        and     #$80            ; get reverse bit
+        asl     a
+        tax                     ; ldx #>$0000
+        rol     a               ; return boolean value
+        rts

libsrc/atmos/cpeeks.s

@@ -0,0 +1,54 @@
+;
+; 2017-06-20, Greg King
+;
+; void cpeeks (char* s, unsigned length);
+;
+
+        .export         _cpeeks
+
+        .import         setscrptr, popax
+        .importzp       ptr1, ptr2, ptr3, tmp1, tmp2
+
+        .macpack        generic
+
+
+_cpeeks:
+        eor     #<$FFFF         ; counting a word upward is faster
+        sta     ptr3            ; so, we use -(length + 1)
+        txa
+        eor     #>$FFFF
+        sta     ptr3+1
+
+        jsr     setscrptr       ; Set ptr2 and .Y to the cursor's address
+        sty     tmp2
+
+        jsr     popax
+        sta     tmp1            ; (will be a .Y index)
+        stx     ptr1+1
+        ldx     #<$0000
+        stx     ptr1
+        bze     L3              ; branch always
+
+L4:     ldy     tmp2
+        lda     (ptr2),y        ; Get char
+        iny
+        bnz     L2
+        inc     ptr2+1
+L2:     sty     tmp2
+        and     #<~$80          ; Remove reverse bit
+        ldy     tmp1
+        sta     (ptr1),y
+        iny
+        bnz     L1
+        inc     ptr1+1
+L1:     sty     tmp1
+
+L3:     inc     ptr3            ; count length
+        bnz     L4
+        inc     ptr3+1
+        bnz     L4
+
+        txa                     ; terminate the string
+        ldy     tmp1
+        sta     (ptr1),y
+        rts