RDROYA01@ULKYVX.BITNET (Robert Royar) (08/26/86)
Does anyone know if it would be possible to connect a remote micro computer to an ST through the DMA "port?" I have a CP/M-68K machine with an RS232 and a PIO connection available and would like to use its 1024K RAM disk and floppies as additional drives for the ST. The RAM disk would be especially useful. I thought of using the DMA port because I was sure I could get the other machine to imitate a diskdrive without the ST's knowing that there is no disk there. The software on the CP/M side should be easy if I just treat the ST requests for directories as calls to user areas. It would need to translate sectors and directory requests from the ST format into the CP/M format and back. But I was wondering about signals from the ST ports and what would be required to make them compatible with another machine. If a DMA <-> RS232 were possible, it shouldn't be too hard to use any machine with an SIO as a remote. If the DMA plan would not work, what other ports, besides the ST serial line, might be used? I need the serial line for the modem. Would a RAM disk driver work as a model for an ST resident program to treat one of the ST ports as a disk? Then the program on the other end could handle the sectoring and finding the files.