6502: update prev commmit (moves P |= F_I; to STATE_RESET instead of device_reset) (nw)

src/devices/cpu/m6502/m6502.cpp

@@ -9,6 +9,8 @@
 TODO:
 - device_start SP = 0x01bd; can't be right. At power-on, SP = 0(0x100)
   and at RESET, it is decremented 3 times without writing to the stack
+  see: https://www.pagetable.com/?p=410
+  In other words, the first couple of cycles of STATE_RESET aren't emulated
 
 ***************************************************************************/
 
@@ -116,7 +118,6 @@ void m6502_device::init()
 
 void m6502_device::device_reset()
 {
-	P |= F_I;
 	inst_state = STATE_RESET;
 	inst_substate = 0;
 	inst_state_base = 0;

src/devices/cpu/m6502/odeco16.lst

@@ -97,7 +97,7 @@ vbl_zpg
 
 #   exceptions
 reset_16
-	PC = read_arg(0xfff1);
+	P |= F_I; PC = read_arg(0xfff1);
 	PC = set_h(PC, read_arg(0xfff0));
 	prefetch();
 	inst_state = -1;

src/devices/cpu/m6502/om6502.lst

@@ -1218,7 +1218,7 @@ tya_imp
 
 #   exceptions
 reset
-	PC = read_arg(0xfffc);
+	P |= F_I; PC = read_arg(0xfffc);
 	PC = set_h(PC, read_arg(0xfffd));
 	prefetch();
 	inst_state = -1;

src/devices/cpu/m6502/om740.lst

@@ -114,7 +114,7 @@ jmp_zpi
 	prefetch();
 
 reset740
-	PC = read_arg(0xfffe);
+	P |= F_I; PC = read_arg(0xfffe);
 	PC = set_h(PC, read_arg(0xffff));
 	prefetch();
 	inst_state = -1;