Wagner, >GWBASIC or QBASIC or even Compiled Basic still in operation As I hear so very little about BASIC these days and I jumped straight from it to ASM many years ago, I assumed that most others were using more "fashionable" HLL's such as C, C++, VB etc. Perhaps it's just the condescending company I keep. You know how it is, boys and their new flash toys. I still use my Commodore 64 too, bought for a small fortune in 1983, even on current projects. With such a versatile User Port (2 x 6526 CIA's) it works very well as a great big microcontroller. It's almost like things have come full circle in that regard. There was a time when I came in for much derision for using it, when others were moving on to PCs. I never found XT's that friendly though and stuck with the C64. Now that uC's are flavour of the month, I'm glad I did. > Explain better (to my email) your data composition and probably I can > help you in some way. The PIC organises collection of the original data and drives CE2, WE and the address clock and reset for the SRAMs (4 x 128kB). The 8 bit data from the SRAM goes into a 74HC157 (quad 2-input multiplexer), the 4 o/ps of which go to the LPT status i/p lines. D0 of LPT is the nybble select. So, two 4-bit nybbles are read into the PC and compiled back into the original data byte (variable called DT) and then written to the drive with PRINT#1,DT. I'm doing it this way until I find out how to turn on enhanced parallel mode in BASIC (if possible, hint hint) to take the 8 bits in directly. On a 233 the current method takes around 90 seconds, which is acceptable, and I think pretty good for a very simple BASIC program. How the data is getting in could be immaterial. What I need is either to be able to save a hex value (ie one byte) rather than an ASCII string, which is what is puffing up the size of the file. I had a look at the link to file types at www.wotsit.org that Keith Causey posted a couple of days ago but no joy. I'm sure I can't write a single byte to the HDD from BASIC using WRITE or PRINT. It'll have to be some sort of memory dump or file conversion program. > ps: Don't send posts to PICLIST using HTML = Yes at your browser... Done. My apologies Jinx