Lotharek's Lair

no more SD CARD NOT DETECTED - avr and SD card talk to each other with no odd resistor dividers - just direct connection with SPI communication made the proper way
avr runs at 3v3
tiny AVR in qfn package, thus 14mhz at 3v3 possible and real
402 smd elements used
level shifting between sio and avr REMOVED ! Atari reads 3v3 at sio port
produced by smd.lotharek.pl ;-)

Technical info:

USAGE:

2 buttons: +1 drive, -1 drive (picture down below)
2 buttons pressed together - RESET of device; loader (sdrive.atr) will load after atari reset
6 leds: 2xRED ( sd act/error) , drive number (rainbow effect at power on):
- D1: PINK (?)
- D2: BLUE
- D3: GREEN
- D4: ORANGE

		`
PINK	BLUE	GREEN	ORANGE

SLOT D1: selected and is used as ATARI disk drive no 1.	SLOT D2: selected and is used as ATARI disk drive no 1.	SLOT D3: selected and is used as ATARI disk drive no 1.	SLOT D4: selected and is used as ATARI disk drive no 1.

STEP BY STEP:

get a uSD card (please, use sth decent..not fakes) or buy one HERE
card must be formatted in fat32, suggested size 16GB !!!
put SDRIVE.ATR file on it
Put some games and demos also. You can use folders
Insert SD CARD into device
Connect device to ATARI to SIO port.
Power ON ATARI
All mentioned leds shall be ON ; giving white colour impression
RED LED shall blink once - SD CARD DETECTED, no ERROR
Choose files You want to load and assign it to D1: --> D4: slots ( Tab, cursors, enter)
RESET Your atari or press inverse key (bottom right)
File assigned to D1: shall load (REMEMBER TO DISABLE BASIC AFTER RESET by HOLDING OPTION key )
Another slot ? press buttons: +1 to slot number or -1 to slot number
Device will indicate with proper colour which slot is active
Reset AGAIN :-)
To start SDRIVE.ATR and reset device itself - press and hold 2 buttons and then RESET ATARI

CLICK TO ENLARGE: ( DEVICES SOLD have much shorter buttons; i just used my final proto as example)

simple ? No ? please, watch video below :-)

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