[Coco] (no subject)

[jdaggett at gate.net]

FYI

Also the GIME chip mirrors writes to the PIA chip at $FF22. While this register is not 
readable by the user, it is there. Writes to $FF22 bits 4 and 5 have definite impact on the 
GIME performance. 


james

On 15 Nov 2007 at 14:46, Steve Bjork wrote:

> Good day everyone!
> 
> I'm looking for all I/O addresses (and mirror addresses too) used by
> past (and new) CoCo products.  (Not just the Tandy stuff, but also all
> third party hardware too.)
> 
> The goal is to create a complete list of all used and more 
> importantly open I/O address for future CoCo projects.
> 
> This is what I've got so far:
> 
> $FF00-$FF3F PIA Reference
> $FF00-$FF1F PIA0
> $FF20-$FF3F PIA1
> 
> Disk Controller Reference
> $FF40 Disk Controller
> $FF41-$FF47 DSKREG Copies
> $FF48 Status/Command
> $FF49 - Track
> $FF4A - Sector
> $FF4B - Data
> $FF50-$FF5F - Other Disks
> 
> Miscellaneous Hardware
> $FF60 -$FF62 X-Pad interface
> $FF60 -$FF67 CoCo Max A/D Module
> $FF60 -$FF7F TC^3 SCSI
> $FF63 Open (*1)
> $FF64 Open (*1)
> $FF65 Open (*1)
> $FF67 Open (*1)
> $FF68 - $FF6B RS-232 Program Pak Interface
> $FF6C - $FF6F Direct Connect Modem Pak
> $FF70 - $FF72 Musica stereo pack
> $FF70 - $FF72 Laser light show D/A
> $FF70 - $FF74 Speech Systems Supervoice
> $FF70 - $FF74 Burke & Burke CYBERVOICE
> $FF70 - $FF78 Glenside IDE controller
> $FF79 Open (*2)
> $FF7A - $FF7B Orchestra-90
> $FF7C Open (*2)
> $FF7D - $FF7E Sound/speech Cartridge
> $FF7F Multi-Pak Programming Register
> 
> COCO 3 GIME Hardware Reference  (All Write Only)
> $FF90 Initialization Register 0
> $FF91 Initialization Register 1
> $FF92 Interrupt Request Enable Register
> $FF93 Fast Interrupt Request Enable Reg
> $FF94 Timer MSB
> $FF95 Timer LSB
> $FF96 Open
> $FF97 Open
> $FF98 Video mode register
> $FF99 Video resolution register
> $FF9A Border color register
> $FF9C Vertical scroll register
> $FF9D Vertical offset register
> $FF9E Vertical offset register
> $FF9F Horizontal offset register
> $FFA0-$FFAF MMU bank registers (Bits 6-0)
> $FFB0-$FFBF Color palette registers (Bits 6-0)
> 
> SAM Registers $FFC0-$FFDF
> $FFC0 - $FFC5 SAM Video Display
> $FFC6 - $FFD3 SAM Page Select
> $FFD4 - $FFD5 SAM Page Select
> $FFD6 - $FFD9 Clock Speed R0/R1
> $FFDA - $FFDD Memory size M0/M1
> $FFDE - $FFDF ROM/RAM map type
> 
> Interrupt Vectors
> $FFE0-$FFF1 Reserved
> $FFF2-$FFFF Interrupt vectors
> 
> (*1) Open if TC^3 SCIS Control and CoCo Max A/D modules are not
> supported (*2) Open if TC^3 SCIS Control is not supported
> 
> Not many open I/O ports. There could be even less when you include
> other hardware like SuperBoard from Cloud-9.  (What about it guys?)
> 
> If you got any other ports that are in use, please send them along so
> we have a complete list of hardware and I/O ports to support.
> 
> Thanks!
> 
> Steve (6809er) Bjork
> 
> 
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