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authorIan C <ianc@noddybox.co.uk>2007-03-16 01:08:06 +0000
committerIan C <ianc@noddybox.co.uk>2007-03-16 01:08:06 +0000
commitea070a77079d8df5e84993568f5f72614018a13e (patch)
tree624d1f7052d5c364b2e1b3749dc2734dac6d8877
parent4118ca0c9af0e0b50ca4ad3ed414e4a5254e4e92 (diff)
Added info about the monitor.
-rw-r--r--instructions.txt46
1 files changed, 45 insertions, 1 deletions
diff --git a/instructions.txt b/instructions.txt
index b7d96ef..e06b48a 100644
--- a/instructions.txt
+++ b/instructions.txt
@@ -110,6 +110,16 @@
Allows you to redefine the DS's joypad and buttons to ZX81 keys.
Follow the on-screen instructions.
+ MACHINE CODE MONITOR
+ Provides access to a basic machine code/memory monitor. This lets
+ you watch the ZX81 execute op-codes, or single-step over them.
+
+ Unless you're actually interested in such things you'll never need
+ to go near this option -- it's there to track down emulation bugs
+ as much as anything.
+
+ See the second to last section for more details.
+
CANCEL
Cancels the menu.
@@ -184,7 +194,41 @@
register has changed.
-7. Configuration Options
+7. Machine Code Monitor
+-----------------------
+
+ On starting the machine code monitor the keyboard will go dim and get
+ overlaid with a text display showing you the Z80 instructions about to be
+ executed along with the current states of the registers in the Z80.
+
+ The keyboard is dim, but still on display as the montitor does let you
+ use the keyboard. Note that all keys are sticky (like the shift key in its
+ default state) and that joypad mappings are ignored.
+
+ With the monitor on display the following joypad keys can be used:
+
+ START - Toggles between running continuously and single-step mode.
+
+ A - If in single-step mode then executes the next instruction.
+
+ X - Display a help page.
+
+ SELECT - Toggles between the disassembly/register display and a
+ display of memory.
+
+ L/R - The shoulder buttons change the address being displayed on
+ the memory dump. Hold the Y key at the same time to make
+ it jump in bigger steps.
+
+ B - Cycles the value used for the memory dump -- either the
+ address as set with the shoulder buttons, or one of the
+ registers: HL, IX, SP, IY, BC or DE.
+
+ Press the config bar at the bottom of the soft keyboard to exit the
+ machine code monitor and return to normal running.
+
+
+8. Configuration Options
------------------------
STICKY SHIFT