<Z-80, which was enjoying almost universal acceptance as the most widely
<applicable and easiest-to-use microprocessor available. Most of the popula
I could argue it was or it wasnt. ;) Keep in mind at that time I was
doing 8048, 8085, z80, 1802, 6100, sc/mp, TI9900, LSI-11, some 6502 and
6800. That does not include the uCOM4 (NEC 4bit) and uCOM75 (cmos high
end 4bit) parts.
<statements about it were pretty much on the money. Of course, the evolutio
<of the 64K DRAM made its refresh counter more or less useless, but the
Only some as a goodly portion still had 128 address row refresh (NEC4164
and About four others). But 64kDrams were really a year out due to price
in late 79 being rather high. (then design cycles for new products wer
9-18 months too).
<the Apple to accomplish the same thing. Meanwhile, Motorola was making a
<BIG mistake, abandoning the amateur and "small" users.
Yes! The 6800 if you had the 25$ big book you were an expert if you could
read. Later parts did come so cheaply supported.
<Since the evolution of the now-popular 'C' and PASCAL compilers for the
<8051-core micro's, I believe the popularity of this 25-year-old model has
<actually increased. The HLL's and the development of high-speed versions o
Yes it has but the code it not as dense as hand written. Then again with
the availability of LARGE ROMs/EPROM/EEPROM it may be development timeover
code density.
<'51-core user. I believe that it's as a consequence of that, that there ar
<now compilers for several truly "ugly" architectures, e.g. the PIC/SCENIX
Yes they were never a favorite for me but then again I could program them
as they looked like the 4bitters I used to work with.
<class of processors. There are also VHDL and VERILOG cores for several of
<the older architectures, e.g. 650x, available for those who prefer to
<"roll-their-own" which are also, though less well, supported with compiler
<and other tools.
If your need embedded 8051, 6502 and z80 are good choices.
<Again, Motorola seems to have been left behind at least with their smaller
<MCU's. I guess that's because of their reputation for spurning application
<which consume fewer than 100K parts per week.
Yep, seen that before.
Now the worst thing I've seen was the 8086/8 and its heirs. I really hated
writing code for it. The segmentation scheme was one horrid hack.
Allison
Received on Sun Apr 11 1999 - 13:37:36 BST