On Friday, June 11, 2021, 05:21:03 p.m. EDT, saturn5tony via groups.io <saturn5tony@...> wrote:
Here is the 1st boot of just the Z80MC CPU board!? yippee! Finished it last week but it had no clock. Found out that my use of a 74LS368 was not a good Idea, so I put an order in to Mouser for an HC368 as Lee designed it for, got it today and in business with the zed80...sweet!!
@@@@ @ H? Hard Reset 01 AF =1D68? BC =0840? DE =FF80? HL =FFFF AF'=01FF? BC'=FFFF? DE'=FFFF? HL'=00C3 IX =FFFF? IY =FFFF? IR =001D? PC =FFFF? SP =FB00 Press M for Monitor.............................. ????????????????????????????????????????????????? MICRO-BASIC COPYRIGHT 1983 BY DAVE DUNFIELD READY ?NO PROGRAM ERROR READY 10 PRINT "HELLO WORLD"; 20 GOTO 10 LIST 0010 PRINT "HELLO WORLD"; 0020 GOTO 10 READY RUN ?SYNTAX ERROR IN LINE 0010 READY 10 PRINT "HELLO WORLD" RUN HELLO WORLD HELLO WORLD HELLO WORLD HELLO WORLD HELLO WORLD HELLO WORLD STOP IN LINE 0020 READY
Here is a pic of it (note to the top right with a discrete clock, now disconnected) also showed me that the chip enable's needed the HC368 as well.
Notice the (white) Mostek Z-80 from 1977! Wow, I was very careful bringing that up power wise too.
Well next I will need to replace the LS245 and LS273 with HC's as well but Mouser did not have any of these on hand. Might work OK but well see.? Also I will be finishing the front panel card and the SIO card as well in the next few days so wish me luck.? 8-)