for Mega65 disable the extended stack on cold/warm restart

c64/aliases/,aliases_cpu.s

@@ -69,6 +69,11 @@
 
 #if HAS_OPCODES_65CE02
 
+// CPU flags support
+
+.pseudocommand cle { .byte $02 }
+.pseudocommand see { .byte $03 }
+
 // .B register support
 
 .pseudocommand tab { .byte $5B }

c64/kernal/init/fce2.hw_entry_reset.s

@@ -11,10 +11,16 @@ hw_entry_reset:
 	// The GPL program at https://github.com/Klaus2m5/6502_65C02_functional_tests/blob/master/6502_functional_test.a65
 	// uses the similar initial reset sequence, affirmed by c64 PRG p269
 
-	sei // disable the interrupts, as fast as possible - they are disabled in case of HW reset,
+	sei                      // disable the interrupts, as fast as possible - they are disabled in case of HW reset,
-	    // but this routine can be also called manually
+	                         // but this routine can be also called manually
 
-	cld // required for all CPUs - due to possibility of manual call
+	cld                      // required for all CPUs - due to possibility of manual call
+
+#if HAS_OPCODES_65CE02
+
+	see                      // disable extended stack
+
+#endif
 
 	ldx #$FF
 	txs

c64/kernal/interrupts/fe66.default_brk_handler.s

@@ -12,11 +12,17 @@ default_brk_handler:
 #if CONFIG_PLATFORM_COMMODORE_64
 
 	ldx #$00
-	sta VIC_SCROLX // turn the display off - we want as little screen artifacts as possible
+	sta VIC_SCROLX           // turn the display off - we want as little screen artifacts as possible
 
 #endif
 
-	cld // make sure this dangerous flag is disabled
+	cld                      // make sure this dangerous flag is disabled
+
+#if HAS_OPCODES_65CE02
+
+	see                      // disable extended stack
+
+#endif
 
 	jsr JRESTOR
 	jsr JIOINIT