TAS unexplained delay when read causes bus error.

diff --git a/gencpu.cpp b/gencpu.cpp
index 3bafb2e7667f2fe9929ed8bb0574ad8ff19aadc1..53915029833658f76420804c1d088e7a352cf7bd 100644 (file)
--- a/gencpu.cpp
+++ b/gencpu.cpp
@@ -686,6 +686,7 @@ static void add_mmu040_movem (int movem)
 
 static char bus_error_text[200];
 static int bus_error_specials;
+static int bus_error_cycles;
 // 1 = first access, 2 = long second access only
 static char bus_error_code[1000], bus_error_code2[1000];
 
@@ -2009,6 +2010,15 @@ static void check_bus_error(const char *name, int offset, int write, int size, c
 
        } else {
 
+               if (bus_error_cycles > 0) {
+                       if (using_prefetch) {
+                               out("%s(%d);\n", do_cycles, bus_error_cycles);
+                       } else {
+                               out("count_cycles += % d * CYCLE_UNIT / 2;\n", bus_error_cycles);
+                       }
+                       bus_error_cycles = 0;
+               }
+
                if (exception_pc_offset) {
                        incpc("%d", exception_pc_offset);
                }
@@ -4431,6 +4441,7 @@ static void resetvars (void)
        m68k_pc_total = 0;
        branch_inst = 0;
        set_fpulimit = 0;
+       bus_error_cycles = 0;
 
        ir2irc = 0;
        mmufixupcnt = 0;
@@ -8071,11 +8082,13 @@ bccl_not68020:
                break;
        case i_TAS:
                if (cpu_level == 0) {
+                       bus_error_cycles = 2;
                        genamode(curi, curi->smode, "srcreg", curi->size, "src", 1, 0, GF_LRMW);
                        genflags(flag_logical, curi->size, "src", "", "");
                        if (!isreg(curi->smode)) {
                                addcycles000(2);
                        }
+                       out("uae_u8 old_src = src;\n");
                        out("src |= 0x80;\n");
                        if (isreg(curi->smode) || !using_ce) {
                                genastore_tas("src", curi->smode, "srcreg", curi->size, "src");