RC2014 IO ports list

[Gary Hammond]

Can anyone point me to a list of the IO ports that are used by the various modules for the RC2014?

[Duncan Munro]

Hi Gary,

I don't have definitive list for all the modules, there are many add-ons out there so capturing them might be something of a challenge :) However I did trace through the circuits for the modules in the Pro kit that I got from Spencer, and have tried to created a port map for them if that's any use.

Port Addr	Assigned To	Read/Write	Purpose	Notes
$10	Compact Flash Module	Both	Access CF card
$11	Compact Flash Module	Both	Access CF card
$12	Compact Flash Module	Both	Access CF card
$13	Compact Flash Module	Both	Access CF card
$14	Compact Flash Module	Both	Access CF card
$15	Compact Flash Module	Both	Access CF card
$16	Compact Flash Module	Both	Access CF card
$17	Compact Flash Module	Both	Access CF card
$30	Paged ROM Module	Write	Page ROM in (reset)	Any value written causes ROM to flip in
$31	Paged ROM Module	Write	Page ROM in (reset)	Duplicate of $30
$32	Paged ROM Module	Write	Page ROM in (reset)	Duplicate of $30
$33	Paged ROM Module	Write	Page ROM in (reset)	Duplicate of $30
$34	Paged ROM Module	Write	Page ROM in (reset)	Duplicate of $30
$35	Paged ROM Module	Write	Page ROM in (reset)	Duplicate of $30
$36	Paged ROM Module	Write	Page ROM in (reset)	Duplicate of $30
$37	Paged ROM Module	Write	Page ROM in (reset)	Duplicate of $30
$38	Paged ROM Module	Write	Page ROM in or out	Any value written causes ROM to flip out or in
$39	Paged ROM Module	Write	Page ROM in or out	Duplicate of $38
$3A	Paged ROM Module	Write	Page ROM in or out	Duplicate of $38
$3B	Paged ROM Module	Write	Page ROM in or out	Duplicate of $38
$3C	Paged ROM Module	Write	Page ROM in or out	Duplicate of $38
$3D	Paged ROM Module	Write	Page ROM in or out	Duplicate of $38
$3E	Paged ROM Module	Write	Page ROM in or out	Duplicate of $38
$3F	Paged ROM Module	Write	Page ROM in or out	Duplicate of $38
$80	Dual Serial Module SIO/2	Write	SIOA Control
$81	Dual Serial Module SIO/2	Both	SIOA Data
$82	Dual Serial Module SIO/2	Write	SIOB Control
$83	Dual Serial Module SIO/2	Both	SIOB Data
$84	Dual Serial Module SIO/2	Write	SIOA Control	Duplicate of $80
$85	Dual Serial Module SIO/2	Both	SIOA Data	Duplicate of $81
$86	Dual Serial Module SIO/2	Write	SIOB Control	Duplicate of $82
$87	Dual Serial Module SIO/2	Both	SIOB Data	Duplicate of $83
$90	Compact Flash Module	Both	Access CF card	Duplicate of $10
$91	Compact Flash Module	Both	Access CF card	Duplicate of $11
$92	Compact Flash Module	Both	Access CF card	Duplicate of $12
$93	Compact Flash Module	Both	Access CF card	Duplicate of $13
$94	Compact Flash Module	Both	Access CF card	Duplicate of $14
$95	Compact Flash Module	Both	Access CF card	Duplicate of $15
$96	Compact Flash Module	Both	Access CF card	Duplicate of $16
$97	Compact Flash Module	Both	Access CF card	Duplicate of $17
$B0	Paged ROM Module	Write	Page ROM in (reset)	Duplicate of $30
$B1	Paged ROM Module	Write	Page ROM in (reset)	Duplicate of $30
$B2	Paged ROM Module	Write	Page ROM in (reset)	Duplicate of $30
$B3	Paged ROM Module	Write	Page ROM in (reset)	Duplicate of $30
$B4	Paged ROM Module	Write	Page ROM in (reset)	Duplicate of $30
$B5	Paged ROM Module	Write	Page ROM in (reset)	Duplicate of $30
$B6	Paged ROM Module	Write	Page ROM in (reset)	Duplicate of $30
$B7	Paged ROM Module	Write	Page ROM in (reset)	Duplicate of $30
$B8	Paged ROM Module	Write	Page ROM in or out	Duplicate of $38
$B9	Paged ROM Module	Write	Page ROM in or out	Duplicate of $38
$BA	Paged ROM Module	Write	Page ROM in or out	Duplicate of $38
$BB	Paged ROM Module	Write	Page ROM in or out	Duplicate of $38
$BC	Paged ROM Module	Write	Page ROM in or out	Duplicate of $38
$BD	Paged ROM Module	Write	Page ROM in or out	Duplicate of $38
$BE	Paged ROM Module	Write	Page ROM in or out	Duplicate of $38
$BF	Paged ROM Module	Write	Page ROM in or out	Duplicate of $38

$x0

$x1

$x2

$x3

$x4

$x5

$x6

$x7

$x8

$x9

$xA

$xB

$xC

$xD

$xE

$xF

$0x

$1x

$2x

$3x

$4x

$5x

$6x

$7x

$8x

$9x

$Ax

$Bx

$Cx

$Dx

$Ex

$Fx

Compact Flash Module

Paged ROM module

Dual Serial Module SIO/2

Ghost ports are shown in a lighter shade.

Regards,

Duncan

On Sat, 10 Apr 2021 at 09:32, Gary Hammond <gfha...@gmail.com> wrote:

Can anyone point me to a list of the IO ports that are used by the various modules for the RC2014?

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[karlab]

Hi

Steve Cousins made a list of many modules and their I/O ports.

You may have to search his web site for more information.

While most RC2014 modules have a defined IO address, Steve Cousins and others (my included) have selectable I/O addresses.

There are however some general guidelines;

$00 paralell devices

$10/$20 storage devices.

$30 memory paging

$80/$A0 serial devices

Karl

[Gary Hammond]

Hi All,

Thanks for the responses, this is what I was looking for.

One of the reasons for asking was that I have one of the IO boards from RC2014 that is set to output port 00H that flashes the bit 2 LED in parallel with the CF busy LED on the RC2014 CF board. Is this a case of aliasing of the IO board address with the CF board?

Cheers,

Gary

[Phillip Stevens]

Gary wrote:

Hi All,

Thanks for the responses, this is what I was looking for.

One of the reasons for asking was that I have one of the IO boards from RC2014 that is set to output port 00H that flashes the bit 2 LED in parallel with the CF busy LED on the RC2014 CF board. Is this a case of aliasing of the IO board address with the CF board?

Here’s the spreadsheet that was mentioned. 

https://docs.google.com/spreadsheets/d/1ZJ_Ju3Cyyz2whgunSGr12wxhsTDOqJJQ6BO4E0xVRKU/edit

The old I/O Module was pretty bad with aliasing, but it is unlikely you have that one. Not sure what the issue is then. Sorry.

P. 

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Sent from a Mobile Device. Replies may appear terse.

[Wesley Isacks]

If you're using RomWBW, this is a feature! By default, it sends debug info to port 00h, and during operation it uses this as disk activity indicators. Each bit corresponds to an HBIOS unit number (so bit 0 for the ROM disk, 1 for the RAM disk, 2 for the CF card etc).

-Wesley

[Gary Hammond]

Nice!

[Colin Piggot]

For the interfaces I've produced to use with the RC2014 I've been putting fully configurable I/O decoding on them for A0-A7, but the default jumper settings are:

SID Sound chip Interface - $54
Graphic OLED Interface - $50

Info on the interfaces are on my site at: https://2014.samcoupe.com/
I've a few other bits and pieces prototyped using $5x to stay in the same general I/O range.

Colin.

[Wesley Isacks]

Fuzix's documentation has a good list that I like to refer to as well. It's over here: https://github.com/EtchedPixels/FUZIX/blob/master/docs/RC2014.md

(all the way at the bottom of that page)

-Wesley

[Alan Cox]

On Mon, 12 Apr 2021 at 23:06, Colin Piggot <c_pi...@hotmail.com> wrote:

For the interfaces I've produced to use with the RC2014 I've been putting fully configurable I/O decoding on them for A0-A7, but the default jumper settings are:

SID Sound chip Interface - $54

I've updated my list of I/O ports in the Fuzix tree to include this one and a couple of others from elsewhere that were missing.