[Coco] Re: Re: CoCo related question? (Better edit for coco3.rom)

[Albert Stinger]

The way I see it is to patch either of two places in the rom:

    EDIT       JSR    L89AE        * GET LINE NUMBER FROM BASIC
or
    L859D    CMPA #'E'            * EXIT?
                    BEQ L8592          * YES - SAME AS ENTER EXCEPT NO ECHO

The first patch could be to the area inside of The Color basic Rom Code 1.2 
with the
10 free bytes. There you could check if there was a line number and if not 
jump to the
enhanced edit command.

The second would be just changing the 'e' command of edit to mean the 
(enhanced
edit command.)

<jdaggett at gate.net> wrote in message 
news:424183A2.27863.12C4ADB at localhost...
> Albert
>
> Not a lot. The Color basic Rom Code 1.2 from $A000 to $BFFF has
> about 10 bytes or so. The Extended Color Basic Rom is full and
> Super Extended basic Rom has 1012 bytes free from $FA0C to
> FDFF.  Finally DOS 1.1 ROM has 167 bytes free.
>
> Not really much room to do a screen type editor.
>
> Now if you map the 8K space from $C000 to $DFFF as internal rom
> and get rid of the author's picture you can recover about  7376
> bytes. Otherwise you have about 1172 bytes give take a few. Could
> be more depending on how much of the old DLOAD code is
> patched and what isleft of it can be overwritten with a patch.
>
>
> james
>
>
> On 23 Mar 2005 at 13:07, Albert Stinger wrote:
>
> To:             coco at maltedmedia.com
> From:           "Albert Stinger"
> <albertstinger24 at canada.com>
> Date sent:      Wed, 23 Mar 2005 13:07:44 -0500
> Subject:        [Coco] Re: CoCo related question? (Better
> edit for coco3.rom)
> Send reply to:  CoCoList for Color Computer Enthusiasts
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>> More questions,
>>
>> Exactly how much rom space is available in the coco3 rom and
>> could be used to make a better edit command?  Where is this
>> rom space located in the rom image?  What would be the best
>> way to interface to the edit command so you could have full
>> screen editing with the cursor keys?
>>
>> "Albert Stinger" 
>> <albertstinger24 at canada.com>
>> wrote in message news:d1s26r$ipo$1 at sea.gmane.org...
>> > Is someone or anyone making a slightly better edit for the
>> > coco3.rom? Please! Full screen editing to go in the wasted rom space
>> > would be nice.
>> >
>> > Albert Stinger.
>> >
>> >
>> >
>> >
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>>
>>
>>
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