[Coco] Re: Coco 4

[Richard E. Crislip]

Hello peak at mail.polarcomm.com

<hand frantically raised and waving> I have one 8-). Ya wanit?

On 01/07/04, peak at mail.polarcomm.com wrote:
> Yep
> Burke's cocoxt did "interface" to an ISA HD controller card.
> However, I was thinking of a more general ISA bus.
> Now, of course we cant really squeeze all of a PC's 1Meg 
> memory plus it's 64k I/O into a coco's address space but 
> since a lot of those ISA cards only used about 4each port for 
> one function we CAN fit some of them.
> Coco's SCS gives us 32 bytes to play with. 32 divided by 4 
> would give us 8 4-port devices. Also some of the ISA 
> controller cards used 8k memory for HD BIOS. So the only 
> thing we have to do is "Re-Map" the memory and I/O addresses 
> into cocos CTS(memory) and SCS(I/O) spaces. This would be 
> easier if there was a real standard for I/O ports on a PC.
> The sort-of Defacto standards will just have to be sufficient 
> and any ISA cards which we use will need to be examined to 
> determine thier port addresses. If anyone knows of an ISA bus 
> multifunction card with HD,FD,Parralell,2 serial or so please 
> let me know. We should probably take a look at several 
> different ones and come to a general consensus about what 
> ports to use for what!  
> 
> ---- Original message ----
>> Date: Tue, 6 Jan 2004 15:18:33 -0500
>> From: <jadonaldson at charter.net>  
>> Subject: Re: Re: [Coco] Coco 4  
>> To: CoCoList for Color Computer Enthusiasts 
> <coco at maltedmedia.com>, CoCoList for Color Computer 
> Enthusiasts <coco at maltedmedia.com>
>> 
>>  If you look at the Burk & Burk interface, it interfaced
>> to 8 bit ISA Hard Drive interfaces. 
>> 
>> John Donaldson
>>> 
>>> From: peak at mail.polarcomm.com
>>> Date: 2004/01/06 Tue PM 01:18:53 EST
>>> To: CoCoList for Color Computer Enthusiasts 
> <coco at maltedmedia.com>
>>> Subject: Re: [Coco] Coco 4
>>> 
>>> Well Neil,
>>> an ISA bus slot is really not to difficult to add to a 
> coco.
>>> As long as we are talking about an older style 8-bit ISA 
> bus!
>>> How you ask? Very similar to the way peter stark did it on 
> his
>>> "PT-68K". See Radio Electronics magazine January thru 
>>> September 1988!
>>> 
>>> 
>>> ---- Original message ----
>>>> Date: Mon, 5 Jan 2004 15:54:25 -0800
>>>> From: "Neil Morrison" <neilsmorr at hotpop.com>  
>>>> Subject: Re: [Coco] Coco 4  
>>>> To: "CoCoList for Color Computer Enthusiasts" 
>>> <coco at maltedmedia.com>
>>>> 
>>>> 
>>>> I _REALLY_ wanted to use ISA boards for I/O etc. because 
>>> they are so
>>>> cheap, but translating the addresses etc. just looked 
> like 
>>> too much
>>>> of nightmare. Too bad because a HD/FD 1 parallel/2 serial 
>>> board is
>>>> around $10 IIRC. I figure a nice little horizontal 
>>> case/power supply
>>>> would be useable, however.
>>>> 
>>>> Neil
>>>> 
>>>> ----- Original Message ----- 
>>>> From: <jdaggett at gate.net>
>>>> 
>>>> 
>>>>> Neil
>>>>> 
>>>>> I invision a mother board type layout using micro ATX 
> form 
>>> factor.
>>>>> Maybe with PCI type slots and headers to plug in for 
> IDE 
>>> and floppy
>>>>> drives. Maybe able to package in a reagular PC case 
> with 
>>> PS2 style
>>>>> mouse and keyboard.
>>>>> 
>>>>> just some wild ideas
>>>>> 
>>>>> james
>>>> 
>>>> 
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>>>> http://five.pairlist.net/mailman/listinfo/coco
>>> 
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>>> 
>> 
>> 
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> 
Regards
-- 
Cruisen                                                      _|_
              on AutoPilot with an Amiga   ---o-( )-o---   and a CoCo
 
                                             Richard