Changeset c5b6c90 in buchla-emu for emu/mid.c

Timestamp:

07/31/2017 05:01:38 PM (7 years ago)

Author:

Thomas Lopatic <thomas@…>

Branches:

master

Children:

1489228

Parents:

1efc42c

git-author:

Thomas Lopatic <thomas@…> (07/31/2017 05:01:32 PM)

git-committer:

Thomas Lopatic <thomas@…> (07/31/2017 05:01:38 PM)

Message:

Successfully loaded midas.abs from disk.

File:

• emu/mid.c (modified) (2 diffs)

emu/mid.c

@@ -23 +23 @@
 
 int32_t mid_verbose = 0;
+
+#define REG_IER_ISR 0
+#define REG_CFR_SR  1
+#define REG_CDR_TBR 2
+#define REG_TDR_RDR 3
 
 void mid_init(void)
@@ -49 +54 @@
 {
         ver2("mid wr %u:%d 0x%0*x", off, sz * 8, sz * 2, val);
+
+        if (sz != 1 || off > 7) {
+                fail("invalid mid wr %u:%d", off, sz * 8);
+        }
+
+        int32_t rg = (int32_t)(off % 4);
+        int32_t un = (int32_t)(off / 4);
+
+        switch (rg) {
+        case REG_CFR_SR:
+                ver2("CFR[%d] 0x%02x", un, val);
+
+                if (un == 1) {
+                        fdd_set_side((int32_t)val & 0x01);
+                }
+                else {
+                        fdd_set_sel((int32_t)val & 0x01);
+                }
+
+                break;
+
+        default:
+                break;
+        }
 }