PLPA fake MMU emulation (same as 68040 PTEST)

diff --git a/newcpu.cpp b/newcpu.cpp
index 2e7ae015acf5aadad19b954759b1db76186c6bfa..c463b483e827926104cafc579b95e252c1808c86 100644 (file)
--- a/newcpu.cpp
+++ b/newcpu.cpp
@@ -3658,7 +3658,7 @@ void mmu_op (uae_u32 opcode, uae_u32 extra)
                        bool data = (regs.dfc & 3) != 2;
 
                        regs.mmusr = 0;
-                       if (fake_mmu_match_ttr(addr,super,data) != TTR_NO_MATCH) {
+                       if (fake_mmu_match_ttr(addr, super, data) != TTR_NO_MATCH) {
                                regs.mmusr = MMU_MMUSR_T | MMU_MMUSR_R;
                        }
                        regs.mmusr |= addr & 0xfffff000;
@@ -3670,6 +3670,15 @@ void mmu_op (uae_u32 opcode, uae_u32 extra)
        } else if ((opcode & 0x0FB8) == 0x588) {
                /* PLPA */
                if (currprefs.cpu_model == 68060) {
+                       int regno = opcode & 7;
+                       uae_u32 addr = m68k_areg (regs, regno);
+                       int write = (opcode & 0x40) == 0;
+                       bool data = (regs.dfc & 3) != 2;
+                       bool super = (regs.dfc & 4) != 0;
+
+                       if (fake_mmu_match_ttr(addr, super, data) == TTR_NO_MATCH) {
+                               m68k_areg (regs, regno) = addr;
+                       }
 #if MMUOP_DEBUG > 0
                        write_log (_T("PLPA\n"));
 #endif