-Comandos siempre con bits 7 y 6 a 01 (o sea, sumando 64)
http://elm-chan.org/docs/mmc/mmc_e.html
http://www.retroleum.co.uk/electronics-articles/basic-mmc-card-access/

-ejemplo al iniciar +3e con mmc:
(Omitiendo lecturas repetidas:)

Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0x493f
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xfe1f valor: 0xFE
Puerto ZXMMC Write: 0x493f valor: 0x49
Puerto ZXMMC Write: 0xff3f valor: 0xFF
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Write: 0xff3f valor: 0xFF
Puerto ZXMMC Write: 0xfe1f valor: 0xFE
Puerto ZXMMC Write: 0x403f valor: 0x40
Puerto ZXMMC Write: 0x953f valor: 0x95
Puerto ZXMMC Read: 0x953f
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0x493f
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xfd1f valor: 0xFD
Puerto ZXMMC Write: 0x493f valor: 0x49
Puerto ZXMMC Write: 0xff3f valor: 0xFF
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Write: 0xff3f valor: 0xFF
Puerto ZXMMC Write: 0xfd1f valor: 0xFD
Puerto ZXMMC Write: 0x403f valor: 0x40
Puerto ZXMMC Write: 0x953f valor: 0x95
Puerto ZXMMC Read: 0x953f
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0x513f
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xfe1f valor: 0xFE
Puerto ZXMMC Write: 0x513f valor: 0x51
Puerto ZXMMC Write: 0xff3f valor: 0xFF
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0x513f
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xfe1f valor: 0xFE
Puerto ZXMMC Write: 0x513f valor: 0x51
Puerto ZXMMC Write: 0x13f valor: 0x01
Puerto ZXMMC Write: 0xff3f valor: 0xFF
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0x513f
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xfd1f valor: 0xFD
Puerto ZXMMC Write: 0x513f valor: 0x51
Puerto ZXMMC Write: 0xff3f valor: 0xFF
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0x513f
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xfd1f valor: 0xFD
Puerto ZXMMC Write: 0x513f valor: 0x51
Puerto ZXMMC Write: 0x13f valor: 0x01
Puerto ZXMMC Write: 0xff3f valor: 0xFF
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0xff3f



Simulando lectura comando 49h:
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0x493f
Puerto ZXMMC Read: 0xff3f
Puerto ZXMMC Write: 0xfe1f valor: 0xFE

comando Puerto ZXMMC Write: 0x493f valor: 0x49
ff de crc ? Puerto ZXMMC Write: 0xff3f valor: 0xFF
leer byte ncr Puerto ZXMMC Read: 0xff3f
leer command response (0) Puerto ZXMMC Read: 0xff3f
mmc cuenta=2
1 Puerto ZXMMC Read: 0x123f
2 Puerto ZXMMC Read: 0x113f
3 Puerto ZXMMC Read: 0x103f
4 Puerto ZXMMC Read: 0xf3f
5 Puerto ZXMMC Read: 0xe3f
6 Puerto ZXMMC Read: 0xd3f
7 Puerto ZXMMC Read: 0xc3f
8 Puerto ZXMMC Read: 0xb3f
9 Puerto ZXMMC Read: 0xa3f
10 Puerto ZXMMC Read: 0x93f
11 Puerto ZXMMC Read: 0x83f
12 Puerto ZXMMC Read: 0x73f
13 Puerto ZXMMC Read: 0x63f
14 Puerto ZXMMC Read: 0x53f
15 Puerto ZXMMC Read: 0x43f
16 Puerto ZXMMC Read: 0x33f
17 Puerto ZXMMC Read: 0x23f
18 Puerto ZXMMC Read: 0x13f
(16 bytes del CSD y los dos de CRC)
Puerto ZXMMC Write: 0xff1f valor: 0xFF
Puerto ZXMMC Read: 0xfe3f

