Escom A1200 Floppy fix

[bigdan]

This one from Amtrade ?

www.amiga-hardware.com/showhardware.cgi?HARDID=389

I have still the doc if needed...

[bigdan]

I've scanned the "real floppy fix" doc (german) and upload it on hardmiga.free.fr

An english doc exist but not yet in my home, sorry ;-)



U7 and U8 are common names for CIA8520 on A1200, the arrowes must point on the right of the 1200 mainboard (in direction of panasonic floppy disk)...

Note the "Real Floppy fix" use the panasonic HD floppy (1.44 Mo) as DD (880 Ko), it only fix the "non-dos d7" panasonic problem.


Note : Amtrade HD is the same thing for A4000 users... A1200 users could use it with a small wire between the interface plugged to HD floppydrive (TEAC, SONY or DELL) and a connector to clip on CIA to obtain the "missing" signal to use NON-DOS disks like demos, games..

Then the drive is a true HD floppy (1760 Ko) as the custom Chinon FB357A supplied with Amiga3000/4000.
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  Réference         Name or function

     U0             68881
     U1             68020
     U2             Alice
     U3             Paula
     U4             Lisa
     U5             Gayle
     U6             ROM 512kx16 150ns
     U7             CIA
     U8             CIA
     U10-11         Optional flash memory 128kx8
     U12            Video Encoder
     U13            Keyboard chip
     U16-17         DRAM 256kx16 80ns
     U18-19         DRAM 256kx16 (optional)
     U20            Budgie
     U30            Vidéo DAC 8 bits

     X1             TTL Oscillator 28.63636 MHz NTSC
     X1             TTL Oscillator 28.37512 MHz PAL