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Revlac
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Posted: 15 April 2018 at 7:12pm | IP Logged Quote Revlac

Yep The old 5.25 floppy disc was great, some of them went for years, even with some mold on them they could still be read... If the poor old 1541 drive could spin the bloody thing,
I never had any success with the more modern 3.5 drives

Thought I would drop a photo or 2
This is my old mans C64 found in the shed covered in dust, it had a custom made boot rom (Red screen and fast boot) and fitted with a reset switch and turbo on off.





The 6510 is at the top 6th from the left.
The custom rom is 4th from the left.


The graphics and sound on these where impressive at the time compared to others.
Just a bit of fun.



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plasma
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Posted: 15 April 2018 at 8:21pm | IP Logged Quote plasma

8mhz z80
http://www.mycpu.eu

have fun

gtx
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chronic
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Posted: 15 April 2018 at 9:10pm | IP Logged Quote chronic


hmmm....not quite portable
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Grogster
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Posted: 16 April 2018 at 10:14am | IP Logged Quote Grogster

Yes, from what I remeber reading, the Z80 CPU is actually a superior chip in many ways vs the 6502, but the 6502 was cheaper. And when you are talking millions of chips in millions of units, even a few cents matter.

Those old PC's and C64/Atari's - inside, they are a thing of beauty, with all those chips all interconnected. These days, it would all be in one chip. Well, it IS. Look at the Micromite/Maximite/MMX.....

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Azure
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Posted: 16 April 2018 at 4:07pm | IP Logged Quote Azure

Reminds me of the KIM-1 and SYM-1 6502 boards that we used when I did a TAFE microprocessor course many many years ago.
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CaptainBoing
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Posted: 16 April 2018 at 5:45pm | IP Logged Quote CaptainBoing

Paul_L wrote:
@ChopperP -- You're right, those old 8 bit basics were easier than MMBasic


sorry guys, I must live in a different universe from you...

all that moving and loading and rotating and carry checking etc... easier than

If a=b+c Then ... ?


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Volhout
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Posted: 16 April 2018 at 8:26pm | IP Logged Quote Volhout

I was intrigued by this one.....

https://www.youtube.com/watch?v=_2uXqTi42LI

Although the monster is really nice.

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Grogster
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Posted: 16 April 2018 at 8:30pm | IP Logged Quote Grogster

Yeah, that video was where I first saw the monster 6502. Perhaps I should have also posted about the Gigatron, but you have done me the service now.

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Boppa
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Posted: 17 April 2018 at 12:19am | IP Logged Quote Boppa

I still dont like no line number basic programs and still write mine with line numbers, to me thats just easier to keep track of than numberless code

Thats just my personal preference tho
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Grogster
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Posted: 17 April 2018 at 9:10am | IP Logged Quote Grogster

I can respect that.

Coming from the Atari days when all programs were also line-numbered, I know exactly what you mean.

Having said that, and now that I have moved to structed code with no line numbers, I would never go back. ....and I was one who never wanted to let go of my line numbers!

When you want to start doing more complicated tasks, you will find that line-numbers are very restrictive and make some tasks impossible if you need lots of nested loops etc, all within on routine.

To be honest with you, 'Invisible' line numbers are still a very useful debugging tool, and MMBASIC and MMEDIT both use them to keep track of actual line numbers. If your code falls over with an error, it always gives you a line number reference, and this is very useful when you take that number over to MMEDIT, and scroll to the line number on the left, to quickly find the line that the error happened on. In big code, this can save a lot of hunting time, so line numbers still have their uses!

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Boppa
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Posted: 17 April 2018 at 4:11pm | IP Logged Quote Boppa

Ive done both and especially when going into someone elses work, where it isnt particularly well thought out or labelled, I just find numbering easier (I actually like that MMEdit does add the line numbering) but then I grew up with line numberng also (Apple II, Vic20, Microbee (back when we actually built computers in Australia!)
I wrote a program for the microbees back when I was still in school for the local video shop (they stocked both VHS and betamax!!) and it was still in use on 2 microbees up until the late 2000's when the shop finally closed, now its just a machine you stick a usb stick and your card into..
:-(

I thought that was pretty good going and I even got paid for it, it bought my first diskdrive! no more audio cassettes and 10/30 minute waiting to load! 5 1/4" cbm disk drive, 160kb of storage per disk....
kb, not mb....

but then that was huge as I only had 6k of ram, (but that was double what the vic started with, 3k of ram, had colour, sprites and 4 channel music, and if you had an eprom burner you could even make your own program carts


Luxuurryy.....
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Azure
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Posted: 17 April 2018 at 4:38pm | IP Logged Quote Azure

@Boppa

I was working with Owen Hill doing some assembly (building S100 boards) and attending one of his microcontroller courses when the Microbee was being designed. I pointed him towards what we were doing with video games (my day job) for graphics to help with a problem he was trying to solve. We stayed in touch for several years after that.

Edited by Azure on 17 April 2018 at 4:42pm
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