Talk:83Plus:BCALLs:50B3 - Revision history

Saibot84 at 23:25, 6 November 2006

2006-11-06T23:25:16Z

FloppusMaximus at 22:40, 6 November 2006

2006-11-06T22:40:28Z

Saibot84: request

2006-11-06T17:38:51Z

request

New page

==Working Code==
I know this is probably trivial, but I was wondering if someone could please post a simple working example of what this BCALL does (meaning, not exactly a disassembly of the original TIOS code, but an example nonetheless) for those of us who feel BCALLing TIOS routine should be avoided whenever possible. ;^) [[User:Saibot84|Saibot84]] 09:38, 6 November 2006 (PST)

← Older revision		Revision as of 23:25, 6 November 2006
Line 20:		Line 20:
	:On another note: I think these routines should be split up into separate pages. As it is it's not clear that 50B3 is the one that's documented (and has the official name Chk_Batt_Low) and is thus presumably the one TI recommends programmers use. It also needs to be pointed out that the boot code versions are only available on HW version 2 and above!		:On another note: I think these routines should be split up into separate pages. As it is it's not clear that 50B3 is the one that's documented (and has the official name Chk_Batt_Low) and is thus presumably the one TI recommends programmers use. It also needs to be pointed out that the boot code versions are only available on HW version 2 and above!
	:[[User:FloppusMaximus\|FloppusMaximus]] 14:40, 6 November 2006 (PST)		:[[User:FloppusMaximus\|FloppusMaximus]] 14:40, 6 November 2006 (PST)
		+	::I may have misunderstood what this BCALL actually does. I was under the impression that it might be possible to find the state of the batteries doing something other than "in a,(2) / and 1". Someone, please correct me if I'm wrong, but wouldn't it be possible (on any z80 calc) to compare the hardware interrupt speed with other things, such as maybe the link speed, the refresh counter, the LCD speed, LCD contrast, and or the Write-to-Flash speed to try to determine the state of the batteries? (such as if one were trying to determine the battery level more specifically than just Good/Bad) [[User:Saibot84\|Saibot84]] 15:25, 6 November 2006 (PST)

← Older revision		Revision as of 22:40, 6 November 2006
Line 1:		Line 1:
	==Working Code==		==Working Code==
	I know this is probably trivial, but I was wondering if someone could please post a simple working example of what this BCALL does (meaning, not exactly a disassembly of the original TIOS code, but an example nonetheless) for those of us who feel BCALLing TIOS routine should be avoided whenever possible. ;^) [[User:Saibot84\|Saibot84]] 09:38, 6 November 2006 (PST)		I know this is probably trivial, but I was wondering if someone could please post a simple working example of what this BCALL does (meaning, not exactly a disassembly of the original TIOS code, but an example nonetheless) for those of us who feel BCALLing TIOS routine should be avoided whenever possible. ;^) [[User:Saibot84\|Saibot84]] 09:38, 6 November 2006 (PST)
		+
		+	:Something like this:
		+	''(on some versions, monkey with port [[83Plus:Ports:3A\|3A]])''
		+	''(monkey with port [[83Plus:Ports:04\|4]])''
		+	''(delay a bit)''
		+	in a,(2)
		+	and 1
		+	jr nz,BatteryGood
		+	res 5,([[83Plus:Flags:18\|iy+$18]])
		+	jr Done
		+	BatteryGood:
		+	set 5,(iy+$18)
		+	Done:
		+	''(restore port 4 and/or 3A)''
		+	bit 5,(iy+$18)
		+	ret
		+	:The different versions do different things to port 4; I have no idea what this means.
		+	:On another note: I think these routines should be split up into separate pages. As it is it's not clear that 50B3 is the one that's documented (and has the official name Chk_Batt_Low) and is thus presumably the one TI recommends programmers use. It also needs to be pointed out that the boot code versions are only available on HW version 2 and above!
		+	:[[User:FloppusMaximus\|FloppusMaximus]] 14:40, 6 November 2006 (PST)