Fix BASIC

msbasic/defines_kilian.s

@@ -17,5 +17,4 @@ SPACE_FOR_GOSUB := $3E
 STACK_TOP           := $FA
 WIDTH               := 40
 WIDTH2              := 30
-
 RAMSTART2           := $0400

msbasic/init.s

@@ -204,9 +204,17 @@ L4098:
         ldx     #TEMPST
         stx     TEMPPT
 .ifndef CONFIG_CBM_ALL
+  .ifdef KILIAN
+        lda #<$BC00
+        sta MEMSIZ
+        lda #>$BC00
+        sta MEMSIZ+1
+        jmp L4106
+  .else
         lda     #<QT_MEMORY_SIZE
         ldy     #>QT_MEMORY_SIZE
         jsr     STROUT
+  .endif
   .ifdef APPLE
         jsr     INLINX
   .else

src/io.c

@@ -13,5 +13,20 @@ int getChar(void) {
 
   int c = getchar();
 
+  // Specifically send FF for EOF to trigger echo cancellation
+  if (c == EOF) {
+    return 0xFF;
+  }
+
+  // BASIC expects CR always
+  if (c == '\n') {
+    return '\r';
+  }
+
+  // BASIC is uppercase only
+  if (c >= 'a' && c <= 'z') {
+    c = c - 'a' + 'A';
+  }
+
   return c;
 }

src/memoryMap.c

@@ -26,27 +26,36 @@ uint8_t readMemory(uint16_t address, uint8_t *ram, uint8_t *rom) {
 }
 
 void writeMemory(uint16_t address, uint8_t value, uint8_t *ram) {
-  if ((address < RAM_SIZE && address < IO_BASE) || address >= ROM_BASE) {
-    if (address < ROM_BASE && ram[IO_BASE + ROM_BANKED_OUT] != 0) {
+  /* Normal RAM */
+  if (address < IO_BASE) {
+    ram[address] = value;
+    return;
+  }
+
+  /* ROM area */
+  if (address >= ROM_BASE) {
+    if (ram[IO_BASE + ROM_BANKED_OUT] != 0) {
       ram[address] = value;
     }
-  } else {
+    return;
+  }
+
+  /* I/O area */
   uint16_t _address = address - IO_BASE;
+
   switch (_address) {
-      case SCREEN_ADDRESS: {
+    case SCREEN_ADDRESS:
       putChar(value);
       break;
-      }
-      case ROM_BANKED_OUT: {
+
+    case ROM_BANKED_OUT:
       ram[IO_BASE + ROM_BANKED_OUT] = value;
       break;
-      }
 
     default:
       break;
   }
 }
-}
 
 uint8_t readStack(uint8_t address, uint8_t *ram) { return ram[0x100 + address]; }