[Coco] Fwd: Re: WordPak Clone

[CoCo Demus]

It works beautifully. Now it's time to reconstruct the OS-9 driver.

the 6545 accesses 16K directly, but in the datasheet says:

By utilizing Both the Refresh Addresses and the Row Addresses, a 512K
address space is available for use in graphics systems.

The older CGA cards used 6845s.

On Fri, Jun 30, 2017 at 6:45 PM, CoCo Demus <retrocanada76 at gmail.com> wrote:

> It works with address FF76,FF77
>
> http://i.imgur.com/MIXlyFt.jpg
>
> On Jun 30, 2017 6:34 PM, "Arthur Flexser" <flexser at fiu.edu> wrote:
>
>> I recall that the WordPak 2 was capable of being upgraded to 8K, if that's
>> any help whatsoever.
>>
>> Art
>>
>> On Fri, Jun 30, 2017 at 9:21 PM, Gene Heskett <gheskett at shentel.net>
>> wrote:
>>
>> > On Friday 30 June 2017 20:46:16 Bruce W. Calkins wrote:
>> >
>> > > It appears the CMOS 6345 is comparable with the MOS 6845 with lower
>> > > power requirements.  One does wonder if Hitachi hid some added
>> > > features like the 6309 vs. the 6809.
>> > >
>> > > Bruce W.
>> > >
>> > I wouldn't be anything but pleasantly surprised if it could somehow
>> > handle a larger ram than the 2k thats in the original.  That was its
>> > bottleneck. My driver added another line of text, but there wasn't room
>> > enough for 2 additional lines.
>> >
>> > > On 06/30/2017 10:57 AM, CoCo Demus wrote:
>> > > > Hi all,
>> > > >
>> > > > I've just got an original (unobtainable) Word Pak RS from Gene
>> > > > Heskett (thanks Gene). I will first make it to work as it seems it's
>> > > > not direct compatible with WordPak 1 & 2.
>> >
>> > The base address may not be the same.  The other one I have has had its
>> > address changed at least twice, mainly because while it only needed a 4
>> > byte wide block, the 4 bytes they chose tied up 2 of those blocks, using
>> > two byte from one block of 4, and 2 bytes from an adjoining block of 4.
>> > Fixing the address also needed the code reassembled to move the address
>> > the code wrote to. There was extended muttering in the coyote.den when
>> > that came to light. Genealogy was discussed, at length. :(
>> >
>> > > > Then I will make a clone of it. But this will happen in August as
>> > > > I'm taking a vacation trip now.
>> > > >
>> > > > I'll let you know,
>> > > >
>> > > > Felipe
>> >
>> >
>> > Cheers, Gene Heskett
>> > --
>> > "There are four boxes to be used in defense of liberty:
>> >  soap, ballot, jury, and ammo. Please use in that order."
>> > -Ed Howdershelt (Author)
>> > Genes Web page <http://geneslinuxbox.net:6309/gene>
>> >
>> > --
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>> >
>>
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>