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author AJR <ajrhacker@users.noreply.github.com>2023-01-13 20:09:57 -0500
committer AJR <ajrhacker@users.noreply.github.com>2023-01-13 20:10:25 -0500
commit33c6487b886eacad916a12637a575ad563fa9e61 (patch)
tree5fb02f333a8949b7a1fece7472bb18c0caa0845c /src
parentf256db3f44ad694764c19710ef2fd77d984cb940 (diff)
bus/thomson/cd90_015.cpp, tecmo/tehkanwc.cpp: Misc. notes
Diffstat (limited to 'src')
-rw-r--r--src/devices/bus/thomson/cd90_015.cpp5
-rw-r--r--src/mame/tecmo/tehkanwc.cpp1
2 files changed, 4 insertions, 2 deletions
diff --git a/src/devices/bus/thomson/cd90_015.cpp b/src/devices/bus/thomson/cd90_015.cpp
index 7205ff3c74b..dce64d306bc 100644
--- a/src/devices/bus/thomson/cd90_015.cpp
+++ b/src/devices/bus/thomson/cd90_015.cpp
@@ -1,9 +1,10 @@
// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
-// CD 90-015 - Floppy drive controller built from a MC6843
+// CD 90-015 - Floppy disk interface built from a MC6843 single-density controller
//
-// Handles up to four 5.25 single-sided drives (UD 90-070)
+// Handles up to four 5.25 single-sided drives (UD 90-070). Formatted capacity is 80 KB.
+// The lack of a track zero sensor is confirmed from schematics.
#include "emu.h"
#include "cd90_015.h"
diff --git a/src/mame/tecmo/tehkanwc.cpp b/src/mame/tecmo/tehkanwc.cpp
index 3c9b7ed9f19..c335cd5ee1a 100644
--- a/src/mame/tecmo/tehkanwc.cpp
+++ b/src/mame/tecmo/tehkanwc.cpp
@@ -18,6 +18,7 @@ TODO:
- Figure out the controls in 'tehkanwc' (they are told to be better in MAME 0.34)
- Figure out the controls in 'teedoff'
- Confirm "Difficulty" Dip Switch in 'teedoff'
+- What does the Z80 I register do here? (HW can latch it during refresh cycles.)
Additional notes (Steph 2002.01.14)