HC08 programming questions

[mauricio2346]

hi!
i want to make a ics board board similar to multilink mon08 from pe micro. i download the an2317d application note about the low cost programming and debbuging options for mc68hc908 MCUs.

i have a big doubt about it: the table 1 (typical mon08-to-target mapping) has the information of the pins used in the monitor rom mode. with gp/gt families there's no problem but if i want to conect in that way other MCUs (jk/jl, kx, mr, qy/qt) the same pins have other configurations.

for example with jk MCUs, the MOD1, MOD0,DIV4 and SSEl pins have a resistor conected to each levels (vcc/gnd). the gp32 don't have this resistors (at least with MOD0 and MOD1 pins). it would work if i connect in series some 10k resistors as in the other MCUs?????

i want that this homemade MON08 connector be similar to this commercial version (cyclone or multilink). what i have to do about it???

thanks.
(Sorry for my english )

[joerg]

Hi mauricio2346
In fact the MON08 connector is not equal for all MPU's (who know why, and am not very happy with this!!). But anyhow we can not change that. I have built a programmer for the HC08 family HC(S)08-SPRMR in the description (manual) you can find how i did the jumper stuff. The pull up resistors are not critical (unless you go to a low value ( 4.7k)).
IF you want to create a MPU based unit, i would be interested to do a project for the HC08 family the works with a USB interface.

Saluti Joerg

PS. i can answer in German and Italian.