SD interface

[VELESOFT]

Exist any easy schematic for connect SD card to ZX ?
No CPLD, no FPGA, only classic schematic.

I find only:
http://www.zxbada.bbk.org/zxmmc/index.htm
http://www.zxbada.bbk.org/zxmmcp/index.htm
http://nedopc.com/gs/ngs.php
http://pentagon.nedopc.com/info.htm (SD on Pentagon and in Z-CONTROLLER)
http://nedopc.com/zxevo/zxevo.php

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