Tony Firshman makes some magical things to make me read } On Wed, 12 Nov 2003 at 09:41:31, Jerome Grimbert wrote: } } >I tried to program some Eprom to replace the 2.91 with at least 3.01 SMSQ/E } >on my Q40... and so far I fail miserably. } >What's the magic process ? Am i missing a step ? } > } >I have a 'lrespr-able' rom file (configurated as I want). } >It works fine when lrespr-ed. } >I used wrom_bas to get the split of this file in two files (high and low words) } >then program the eprom. } >But they do not works: when I install them on the Q40, the screen is } >just random and nothing happen. (and yes, I checked the low/high } >placement:-) } > ... } >Looking at the beginning of the two files (the 2.91 and my home 3.01), } >the 2.91 seems to start with a Q40 Hardware Initialisation module, } >where as in the 3.01 that module is after a SMSQ/E modules management module } >(or something that sound similar). Is this the reason for my failure ? } >(I just used the provided flp_bas program, must it be modified to } >produce the rom code ?) } >Does anybody succeed in making eprom for the Q40 with a recent version } >of SMSQ/E ? How did you do ? (hint and direction welcome) } > } >Any suggestion ? } I found I could program successfully for the Q40 very few of the } recovered eproms Peter Graf sent me - mainly ST. } } The situation was so bad I got my programmer 'repaired' at a cost of } about �100. Omnipro found nothing particularly wrong with the } programmer. It certainly had always been programming the eproms } successfully - it was just that the eproms did not work in the Q40.
Looking for some 'replacement' of 27C4096 (not available at my shop), (because we are already 5K near the limit of the 27C1024...) I was suggested a 27C042. while performing some research on the internet, I found that the timing of various Eprom might vary from a manufacturer to another (there is even a manufacturer which sells the same model with various timing. one is name 27C....-100 and the other 27C....-150). The mapping of a 27C042 looked fine, but if I have to worry about the timing, I better check twice and only get a single pair first. (excepted my programmer does not seems to list the 27C042, which also mean investigating adding it, if possible, manually... that's another private problem). Do we have any hardware specification/documentation for the eprom on the Q40 ? (including bus access and signals) } } I then bought some brand new eproms - ST again I think - and all worked. } } Try programming a known workable SMSQ/E (2.91) before embarking on the } new one to make sure the eproms are OK. Done that (copy the original 2.91 on new eprom set). Works fine. (I should close the window with a sticker, but I lack the sticker...) Look's like I'm on the lucky side so far, because my new eprom are all from ST. I really believe I'm stuck at the SMSQ/E code level so far. And I haven't a clue about what to do...
