diff --git a/src/mame/machine/m1comm.c b/src/mame/machine/m1comm.c
index 993027be98b..e88095af307 100644
--- a/src/mame/machine/m1comm.c
+++ b/src/mame/machine/m1comm.c
@@ -242,7 +242,7 @@ WRITE8_MEMBER(m1comm_device::syn_w)
 
 READ8_MEMBER(m1comm_device::zfg_r)
 {
-	UINT8 result = m_zfg | 0xFE;
+	UINT8 result = m_zfg | (~m_fg << 7) | 0x7e;
 #ifdef __M1COMM_VERBOSE__
 	printf("m1comm-zfg_r: read register %02x for value %02x\n", offset, result);
 #endif
diff --git a/src/mame/machine/s32comm.c b/src/mame/machine/s32comm.c
index 53c8ddb443d..aa0c5e0b6dd 100644
--- a/src/mame/machine/s32comm.c
+++ b/src/mame/machine/s32comm.c
@@ -39,11 +39,11 @@ Sega System Multi32 Comm PCB 837-8792-91
 | |---------------------------------|   |---------------------------------|      |
 |                CN3                                    CN4                      |
 |                                                                                |
-|    Z80                   MB8421                MB89237A            MB89374     |
+|    Z80                   MB89374                MB89237A            MB8421     |
 |                                                                                |
-|    15033.17            PAL                                                     |
+|    15033.17             315-5610                                               |
 |                                                                                |
-|    MB8464                                                              PAL     |
+|    MB8464                                                         315-5506     |
 |                CN1                                         CN2                 |
 | |---------------------------------|        |---------------------------------| |
 | |---------------------------------|        |---------------------------------| |