Add MQ register support.

1 files changed, 3 insertions, 0 deletions

diff --git a/isa/isa.h b/isa/isa.h
index 3b8220e..11a8db2 100644
--- a/isa/isa.h
+++ b/isa/isa.h
@@ -22,9 +22,11 @@ struct instruction_context {
     bool need_exec_load = false;        // data = mem[final_address]
     bool need_read_acc = false;         // acc = %acc
     bool need_read_link = false;        // link = %link
+    bool need_read_mq = false;          // mq = %mq
     std::optional<ctlreg> read_ctlreg;  // ctlval = %[read_ctlreg]
     bool need_write_acc = false;        // %acc = acc
     bool need_write_link = false;       // %link = link
+    bool need_write_mq = false;         // %mq = mq
     std::optional<ctlreg> write_ctlreg; // %[write_ctlreg] = ctlval
     bool need_exec_store = false;       // mem[final_address] = data
     bool possibly_redirects = false;    // %pc = next_pc
@@ -40,6 +42,7 @@ struct instruction_context {
     std::optional<unsigned int> data;
     std::optional<unsigned int> acc;
     std::optional<bool> link;
+    std::optional<unsigned int> mq;
     bool halt = false;
 };