No, not again, look at that subjext: Sampler... Sound Sampler..... Yes, I finally got the SFX Sound Sampler after a _very_ long period of negotiation and took it apart last night. Well - there's nothing unusual in there *at*all* ..... The device runs in PIO mode rather than DMA mode on the SoundBlasters, though if you had an REU I guess you could make an attempt at some sort of interrupt driven pseudo-DMA. That is, if you can get an REU and a Sound Sampler to coexist happily; the Sound Sampler seems to use *both* I/O lines though I haven't examined how it is decoded. Anyway, the device uses a ZN429 and a ZN449 for the conversion stuff, a 74139 for address decoding of some kind, two LM348 quad op-amps, a 7660 voltage convertor for generating -ve voltages and a 741 op-amp (YUK!) in there as well, so there's nothing that couldn't be replicated on a clone board. I'll find out the software interface in due course and set about making another schematic, but this may take some time as there's a *lot* of analogue components in there. As with the Sound Expander, the cartridge pass-thru port is incomplete and probably only supports MIDI cartridges. I suspect that the Expander and the Sampler can't be run at the same time, which is a shame as they are effectively equivalent to a real Sound Blaster when combined. Unfortunately the version I got is the cassette version, without 'Latin' drum kit samples, but I shall make some attempt to get it archived. Could someone explain, what's the best way of creating tape images? I thought of loading the tape into a C64 and using an Action Replay to save a disk image, but I find that very unsatisfactory. I've seen a schematic for adding datassette support to the X1541 cable, so how does that work? Richard - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tcm.hut.fi.
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