Forum-64

Moin!

Ich hab' monentan leider keine Zeit das in einen Stand zu bringen, in dem ich es gerne hätte, deshalb gibt's einfach das aktuelle Paket:
Click

Introduction
============

SD2IEC LCD 0.2b is my try to extend the SD2IEC/MCC2IEC controllers with a LCD display.
index.php?page=Attachment&attachmentID=18039index.php?page=Attachment&attachmentID=18040index.php?page=Attachment&attachmentID=18041

It is bases heavily on the SD2IEC 0.6.6 firmware by Ingo Korb, who did a great job there!

Note that i made several modifications of the firmware. Ingo Korb is not responsible for
any wanted or unwanted features of this firmware version.

Since this is a slightly unfinished fun project (sorry, not so much spare time at the moment)
i am publishing it as it is in the hope that it will be useful.

There's no guarantee that the code works or that the suggested hardware modifications are correct.
Use it on your own risk!


Additional Features
===================

* Based on the SD2IEC Firmware V0.6.6 by Ingo Korb

* Runs on Atmel ATMEGA32 MCU. Should run on ATMEGA644P MCU too (not yet tested).

* Display various information like
- current path (D:<path>)
- current D64 image (D:<Image.d64>)
- file access (L/S/R:<file>)
- error messages (E:<message>)
- user defined messages
- and a nice boot screen (-;

* Support HD 44780 compatible displays (2x16 or 2x20 chars)


Removed Features
================

I fitted in the LCD routines at the price of:

- No debug code (UART output)
- No bootloader support on ATMEGA32 (sorry, not enough space)


Additional Commands available via IEC
=====================================

XT* Text Commands
-----------------

The display can be accessed from the c64!
Use commands "XT1" and "XT2" to send text to display line 1 or 2.
The addressed line will be cleared before text is printed.

Example 1 - send "Lightyears ahead!" to line1:

OPEN15,8,15,"XT1Lightyears ahead!"

The "XTC" command allows to send a control code followed by data, which makes it possible
to program the display from the C64 side, e.g. define own characters.

Example2 - clear the screen:

OPEN15,8,15,"XTC"+CHR$(1) will clear the screen.

Example 3 - define a special character with a "heart" (line 2) and print it 3 times (line 3):
1 OPEN15,8,15
2 PRINT#15,"XTC"+CHR$(64)+CHR$(27)+CHR$(31)+CHR$(31)+CHR$(14)+CHR$(4)+CHR$(0)+CHR$(0)
3 print#15,"XT1"+CHR$(+CHR$(+CHR$(
4 CLOSE15


Display About Message
----------------------

The XA command shows a small about message:

Example:

OPEN15,8,15,"XA"

Display Greetings & Credits
---------------------------

The XG command shows the greetings and credits:

Example:

OPEN15,8,15,"XG"


Undocumented experimental feature
----------------------------------

The XX command is not documented. It might cause skynet to
link all computers together to play a game of global
thermonuclear war.

Maybe your C64 is not connected to skynet, so you'll give it a try.
Good luck!

Example:

OPEN15,8,15,"XX"


LCD Hardware
============

Every HD 44780 compatible displays (2x16 or 2x20 chars) should work
The display is accessed in 4-bit mode.

Different pinouts have to be used depending on the hardware variant
of the SD2IEC / MMC2IEC device:


sd2iec V1.4 by Shadowolf (sw1 variant)
MMC2IEC by Lars Pontoppidan (larsp variant)
-------------------------------------------
(original design, also used by PCBs from Peter Sieg)

Display Atmega
RS PB0
RW PB1
E PB2
DB4 PA4
DB5 PA5
DB6 PA6
DB7 PA7


sd2iec V1.6 by Shadowolf (sw2 variant)
--------------------------------------
ATTENTION: I have not yet tested this pinout so it might be possible that it is not working.
At least it will be hard to solder the display to PB0,PB1 and PB3 if using a TQFP44 mcu.

Display Atmega
RS PB0
RW PB1
E PB3

DB4 PC4
DB5 PC5
DB6 PC6
DB7 PC7

For other variants please feel encouraged to change the lcd.h to suit your needs.


Credits
=======

Ingo Korb alias for his great SD2IEC firmware.
Shadowolf for his outstanding hardware designs running the SD2IEC firmware.
Lars Pontoppidan for creating the MMC2IEC in the first place.
Jim Brain & ChaN for basic code like IEC routines and FAT driver.
Commodore for the good times.

Licence
=======

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License only.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Musste das CBM-Logo und den "XX"-Befehl vorerst wieder rausnehmen, weil sonst zur Laufzeit der wertvolle Speicher zu knapp wird.
Hier also die aktualisierten Sourcen Sources
Und das aktualisierte Image für Larsp-hardware: Firmware

Quoted from "Unseen"

Sowas legt man ja auch nicht im RAM sondern im Flash ab. Wie das geht kannst du dir zB in errormsg.c anschauen, die Fehlermeldungen liegen auch nur im Flash.

Yep, da hast Du wohl Recht. Danke für den Tip! Schmerzliche Erfahrung, dass für die 64 Bytes Logo kein Platz mehr im RAM war...

Die weiter oben beschriebenen Funktionen in den Code einzubauen dauert eine Stunde (ich weiß es, denn ich hab' das eben gemacht).
Hinzu kommen einige Stunden für Tests, Doku, Uploads und Diskussionen im Forum (-;

Ich habe mir ein paar sehr schöne seriell ansteuerbare VFDs für kleines Geld sichern können:
index.php?page=Attachment&attachmentID=18234
Jetzt braucht's nur noch ein schönes Gehäuse....