The 6809 was my fav 8 bitter to program. Relocatable code, many addressing
modes, the index registers, stack pointers, consistent instruction set..
There was a decent C compiler, Introl. It's a shame that it never really
caught on.
I've often wondered whether the RCA 1802 could've been
On 4/21/24 17:44, ben via cctalk wrote:
> On 2024-04-21 5:26 p.m., Chuck Guzis via cctalk wrote:
>> On 4/21/24 12:11, ben via cctalk wrote:
>>> I keep finding I still need 74XX just for having 10 TTL loads,
>>> and 74LSXX just does not have the power.
>>
>> Ever try BiCMOS chips? IIRC, the
On 2024-04-21 5:26 p.m., Chuck Guzis via cctalk wrote:
On 4/21/24 12:11, ben via cctalk wrote:
I keep finding I still need 74XX just for having 10 TTL loads,
and 74LSXX just does not have the power.
Ever try BiCMOS chips? IIRC, the 74ABTxxx will drive loads of up to 60
ma, far in excess of
On 4/21/24 12:11, ben via cctalk wrote:
> I keep finding I still need 74XX just for having 10 TTL loads,
> and 74LSXX just does not have the power.
Ever try BiCMOS chips? IIRC, the 74ABTxxx will drive loads of up to 60
ma, far in excess of old 74xx parts.
--Chuck
On 2024-04-21 3:27 p.m., Jerry Weiss wrote:
While intention might have been to last XX years, I am becoming
increasingly pessimistic about longevity of most electronic devices. A
crystal radio with an open air capacitor seems like the only good bet.
Between electrolytic capacitor aging
While intention might have been to last XX years, I am becoming
increasingly pessimistic about longevity of most electronic devices. A
crystal radio with an open air capacitor seems like the only good bet.
Between electrolytic capacitor aging challenges, discrete and integrated
circuit hermetic
Cc: Fred Cisin
Subject: [cctalk] Re: Last Buy notification for Z80 (Z84C00 Product line)
Gee! Have sales gone down?
One more reason to use the 8080 subset when writing CP/M programs.
Aren't there already some licensed second sources?
> On Apr 21, 2024, at 3:11 PM, ben via cctalk wrote:
>
> On 2024-04-21 8:45 a.m., Mike Katz wrote:
>
>> As for the RP2040 being cheap crap, I beg to differ with you. It is a solid
>> chip, produced in 10s of millions at least. And, I would bet, a better
>> quality chip than your Z-80, if
On 2024-04-21 8:45 a.m., Mike Katz wrote:
As for the RP2040 being cheap crap, I beg to differ with you. It is a
solid chip, produced in 10s of millions at least. And, I would bet, a
better quality chip than your Z-80, if due only to improved IC
manufacturing technologies.
The pi looks
On 4/21/24 09:37, Mike Katz wrote:
> Even the 6809 could push up to 8 registers (up to 10 bytes) at once on
> one of two stacks in a single two byte instruction.
The 6809 was introduced the same year as the 8086. The 80186,
introduced in 1982, did have the "PUSHA POPA" instructions and was
Even the 6809 could push up to 8 registers (up to 10 bytes) at once on
one of two stacks in a single two byte instruction.
On 4/21/2024 11:27 AM, Chuck Guzis via cctalk wrote:
On 4/21/24 07:45, Mike Katz via cctalk wrote:
One of the biggest features of the Z-80, the extra register set, was
On 4/21/24 07:45, Mike Katz via cctalk wrote:
> One of the biggest features of the Z-80, the extra register set, was
> rarely used in open source software in order to maintain compatibility
> with the 8080.
My understanding of the extra (partial) set of registers on the Z80 was
that they were
Well my PDP-8 was built in 1974 and is still running (with careful
maintenance). My PiDP-8/I has been up and running continuously with a
Raspberry PI 3B running it for about 5 years now. My PiDP-11 has been
up and running with a PI-4B for more than 4 years continuously.
Though I agree with
On 2024-04-20 8:33 p.m., Mike Katz via cctalk wrote:
For anything more sophisticated than your coffee pot the RP2040 from
Raspberry Pie is a fantastic little chip, dual core 133 MHz Cortex M0+
with 8 PIO engines, 264K of RAM, ADC, UART, SPI, I2C all for under a
dollar. I designed a fully
For anything more sophisticated than your coffee pot the RP2040 from
Raspberry Pie is a fantastic little chip, dual core 133 MHz Cortex M0+
with 8 PIO engines, 264K of RAM, ADC, UART, SPI, I2C all for under a
dollar. I designed a fully functional RP2040 with 16 Mb flash for under
$2.00. In
On 4/20/24 13:16, Wayne S via cctalk wrote:
Who still uses the Z80 line for new projects? Wouldn’t it be easier and cheaper
to just use an Arduino or Raspberry Pi?
I dissected a dead coffee maker last week that has a current-design 8051
clone running the control board.
Well-known
On 2024-04-20 12:20 p.m., Jim Brain via cctalk wrote:
On 4/20/2024 1:16 PM, Wayne S wrote:
Who still uses the Z80 line for new projects? Wouldn’t it be easier
and cheaper to just use an Arduino or Raspberry Pi?
Given the list you're posting on... :-)
Jim
True, but the Z80 is 5 volt logic.
Good point but i’m not an trained EE, just a hobbyist so i’m just curious. I
buy Z80’s and other’s for repair projects but …
Sent from my iPhone
> On Apr 20, 2024, at 11:20, Jim Brain wrote:
>
> On 4/20/2024 1:16 PM, Wayne S wrote:
>> Who still uses the Z80 line for new projects? Wouldn’t
On 4/20/2024 1:16 PM, Wayne S wrote:
Who still uses the Z80 line for new projects? Wouldn’t it be easier and cheaper
to just use an Arduino or Raspberry Pi?
Given the list you're posting on... :-)
Jim
Who still uses the Z80 line for new projects? Wouldn’t it be easier and cheaper
to just use an Arduino or Raspberry Pi?
Sent from my iPhone
> On Apr 20, 2024, at 10:54, Jim Brain via cctalk wrote:
>
> to
On 4/20/2024 9:55 AM, Jon Elson via cctalk wrote:
On 4/19/24 21:07, Fred Cisin via cctalk wrote:
Gee! Have sales gone down?
One more reason to use the 8080 subset when writing CP/M programs.
Aren't there already some licensed second sources?
Harris also made an all-CMOS plug-compatible
On 4/20/24 01:37, Peter Corlett via cctalk wrote:
> There's this thing called "inflation", which does tend to become somewhat
> significant after four decades.
>
> In the mid-80s, a pint of beer cost about 70 pence. I've escaped that
> benighted island, but according to friends who were not so
On 4/19/24 21:07, Fred Cisin via cctalk wrote:
Gee! Have sales gone down?
One more reason to use the 8080 subset when writing CP/M
programs.
Aren't there already some licensed second sources?
Harris also made an all-CMOS plug-compatible Z-80. I used
it in a low-power project.
Jon
On 4/19/24 20:57, Bill Degnan via cctalk wrote:
As it is now, running z80 production must no longer be profitable for
Zilog, but some other manufacturer can license z80 production. Right? If
there is a demand someone will produce them
Rochester Electronics might buy up the masks and uncut
On 2024-04-20 04:37, Peter Corlett via cctalk wrote:
Unless people start panic-buying them, Z80 chips are likely to languish in
Mouser etc's warehouses for years. After all, Zilog wouldn't stop production
of something in high demand.
They will be still at Mouser/DigiKey for a while, then be
On Fri, Apr 19, 2024 at 09:34:42PM -0700, Chuck Guzis via cctalk wrote:
> On 4/19/24 19:39, ben via cctalk wrote:
[...]
>> Now is a good time to stock up for any z80 projects or repair, while they
>> are $10 or less on epay.
Unless people start panic-buying them, Z80 chips are likely to languish
On 4/19/24 19:39, ben via cctalk wrote:
> There still are RADIO SHACK 8080A's still on ebay, with @RARE@ prices.
> NO thank you, z80's are the way to go.
I found 8085 generally easier to work with, but that's just me.
> Now is a good time to stock up for any z80 projects
> or repair, while they
On 2024-04-19 8:07 p.m., Fred Cisin via cctalk wrote:
Gee! Have sales gone down?
One more reason to use the 8080 subset when writing CP/M programs.
There still are RADIO SHACK 8080A's still on ebay, with @RARE@ prices.
NO thank you, z80's are the way to go.
Aren't there already some
Gee! Have sales gone down?
One more reason to use the 8080 subset when writing CP/M programs.
Aren't there already some licensed second sources?
As it is now, running z80 production must no longer be profitable for
Zilog, but some other manufacturer can license z80 production. Right? If
there is a demand someone will produce them
It was a good run though.
Bill
On Fri, Apr 19, 2024, 5:19 PM Chuck Guzis via cctalk
wrote:
> On
On 4/19/24 11:55, Peter Schow via cctalk wrote:
>
> https://www.mouser.com/PCN/Littelfuse_PCN_Z84C00.pdf
>
I should add parenthetically that in my wildest fevered dreams did I
ever think that Zilog would be a division of Littlefuse--even after the
Exxon debacle.
--Chuck
On 4/19/24 11:55, Peter Schow via cctalk wrote:
> In case you missed it, Zilog has issued a Last Buy notification for the Z80:
>
> https://www.mouser.com/PCN/Littelfuse_PCN_Z84C00.pdf
>
> Looks like Mouser and Digikey still have decent inventory of them.
There should still be a reliable supply
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