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Posted By

MIRKOSOFT
on 2016-10-02
20:06:21
 Computer reset and power-on message

Hi!

I'm here newbie and want to ask trivial Qs, only 2:
1. how to call reset computer?
2. how to print Power-on message - whole text ending writting READY prompt? Simple unchanged all excepts screen. I found it in C128 where leaves even inactive screen untouched... in case of C16 or Plus/4 I found only printing message ending jump to MLM. I found Basic warm start - this prints power-on message completely, but warm start means NEW and other system changes...

Thank you for your patience.
Miro

Posted By

gerliczer
on 2016-10-03
01:42:34
 Re: Computer reset and power-on message

SEI ; disable interrupt servicing
LDA #0
STA $FF0A ; disable interrupts
ASL $FF09 ; acknowledge pending interrupts
STA $FDD0 ; set default ROM configuration
STA $FF3E ; page in ROM
JMP $FFF6 ; call reset

$80C2, but it does BASIC NEW.

Get the Ultimate Map by SVS. Get a ROM disassembly. Hard-copies sometime can be found and I'd be very surprised if it couldn't be found somewhere in the Internet.

Posted By

MIRKOSOFT
on 2016-10-03
05:41:11
 Re: Computer reset and power-on message

Thank you.
Exist routine which at end of printing power-on message jumps not to MLM?

Miro

Posted By

JamesC
on 2016-10-03
14:33:00
 Re: Computer reset and power-on message

If you're not warm-starting, why do you need to duplicate the cold/warm start screen? O.o

Posted By

SVS
on 2016-10-05
05:08:25
 Re: Computer reset and power-on message

If this can help: the power-on message is stored in ROM at $80CC. The routine to show it is on $80C2.

Posted By

gerliczer
on 2016-10-05
12:22:56
 Re: Computer reset and power-on message

It won't help him. He wants something that is not there in the ROM.



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