83Plus:Hooks:9B80 - Revision history

Harold: /* Comments */

2006-11-17T14:52:22Z

‎Comments

FloppusMaximus at 05:12, 30 March 2005

2005-03-30T05:12:22Z

130.215.232.102: categorized

2005-03-28T16:51:12Z

categorized

FloppusMaximus at 05:25, 28 March 2005

2005-03-28T05:25:55Z

FloppusMaximus at 05:15, 28 March 2005

2005-03-28T05:15:53Z

New page

'''Note:''' Do not take the information on this template page as actual documentation!

The Hooks are named by their hook pointer block address (the four bytes consisting of page, address, and an extra byte), in hexadecimal. An example is [[83Plus:Hooks:9B84]].

----

== Synopsis ==
'''Name:''' ImAHook

'''Hook Pointer Block Address:''' [[83Plus:RAM:8562|8562]]

'''Hook Enable BCALL:''' [[83Plus:BCALLs:1234|1234]]

'''Hook Disable BCALL:''' [[83Plus:BCALLs:5678|5678]]

'''Hook Call BCALL:''' [[83Plus:BCALLs:9012|9012]]

'''Hook Active Flag:''' 6, (iy + 23h)

This hook allows you to change the values that [[83Plus:BCALLs:4972|GetKey]] returns.

== Using the Hook ==
These different values, passed in a, determines what the hook should do.
* 1: The calculator just turned on. There seem to be no other values passed to the hook.
* 2: The calculator is computing 1+1.
** b: 1
** c: 1
** Change b and/or c to affect the output of the problem (which will still look like 1+1 to the user).
* 3: Preparing to turn off due to 2nd+OFF.
** Zero flag: Clear to abort the power off.

== Comments ==
This hook doesn't exist. This is a demonstration only.

== Credits and Contributions ==
* '''/dev/hda1:''' My favorite hard drive partition.

@@ Line 21: / Line 21: @@
 == Comments ==
-If you place the following at 4087:
+If you place the following at $4087:
   <nowiki> .db 96h, 0E2h

@@ Line 1: / Line 1: @@
-[[Category:83Plus:Hooks:By_Name|Library Hook]]
+[[Category:83Plus:Hooks:By_Name|Library Hook]] [[Category:83Plus:Hooks:By_Address|9B80 - Library Hook]]
 [[Category:83Plus:Hooks:By_Address|9B80 - Library Hook]]
 == Synopsis ==
 '''Name:''' Library Hook

← Older revision		Revision as of 16:51, 28 March 2005
Line 1:		Line 1:
		+	[[Category:83Plus:Hooks:By_Name\|Library Hook]]
		+	[[Category:83Plus:Hooks:By_Address\|9B80 - Library Hook]]
	== Synopsis ==		== Synopsis ==
	'''Name:''' Library Hook		'''Name:''' Library Hook

@@ Line 1: / Line 1: @@
 == Synopsis ==
-'''Name:''' ImAHook
+'''Name:''' Library Hook
-'''Hook Pointer Block Address:''' [[83Plus:RAM:8562|8562]]
+'''Hook Pointer Block Address:''' [[83Plus:RAM:9B80|9B80]]
-'''Hook Enable BCALL:''' [[83Plus:BCALLs:1234|1234]]
+'''Hook Enable BCALL:''' [[83Plus:BCALLs:4F63|4F63]]
-'''Hook Disable BCALL:''' [[83Plus:BCALLs:5678|5678]]
+'''Hook Disable BCALL:''' [[83Plus:BCALLs:4F6C|4F6C]]
-'''Hook Call BCALL:''' [[83Plus:BCALLs:9012|9012]]
+'''Hook Call BCALL:''' [[83Plus:BCALLs:94F5A|4F5A]]
-'''Hook Active Flag:''' 6, (iy + 23h)
+'''Hook Active Flag:''' [[83Plus:Flags:34#Bit_1|1, (iy + 34h)]]
-This hook allows you to change the values that [[83Plus:BCALLs:4972|GetKey]] returns.
+This hook is available for apps' internal use and to interface with BASIC programs using the OpenLib and ExecLib functions.
 == Using the Hook ==
-These different values, passed in a, determines what the hook should do.
-* 1: The calculator just turned on. There seem to be no other values passed to the hook.
+This hook is never used by the 83+ OS.  On the 84+, it is used to implement the OpenLib( / ExecLib functions.
-* 2: The calculator is computing 1+1.
-** b: 1
-** c: 1
-** Change b and/or c to affect the output of the problem (which will still look like 1+1 to the user).
-* 3: Preparing to turn off due to 2nd+OFF.
-** Zero flag: Clear to abort the power off.
 == Comments ==
-This hook doesn't exist. This is a demonstration only.
 == Credits and Contributions ==
-* '''/dev/hda1:''' My favorite hard drive partition.
+* '''Michael Vincent:''' Analyzing the OpenLib/ExecLib interface on OS 2.21 and above.