Ben Heck's Apple 1 Replica Part 2 

Element 14... The 14th element the the periodic table is silicon... It all makes sense now.

I like how he's leaving the intermediate scope of DIY projects, and is getting into more complicated realms.

Each of the _eight cores_ in the Propeller runs at five times the speed of the Apple's 6502, and the unit has as much memory as the rest of the computer... Augmenting old technology with modern technology feels so weird sometimes.

This series makes me happy!

Only some replica makers, not all, use microcontrollers. A very popular example of that approach is the Briel kit, which emphasizes simplicity and low cost. Others such as the Mimeo reproduce Woz's original Apple 1 design.

I can't wait for part 3!

This approach is very much like the Briel Computers "Replica I" Apple I clone.....just a 6502, a PIA, a RAM chip and a (EP)ROM chip, and a Propeller chip to do everything else (glue logic, video generation, etc).

Don't take too many bytes from that Apple!

Why did i miss these episodes......

They Live, great B movie. I'm still not sure why you aren't using the laser paint method to do the pcb's. Seems like it be so much easier than this crazy hand wiring you are doing.

Making a full keyboard from scratch looks like a fun project

Ben, you just have the best job in the world :-)

A shifted 2 should be a double quote for true retro-goodness.

You sir, are a genius.

Technically debouncing switches means latching them to prevent high frequency logic from detecting multiple presses due to the physical contact bounce of the switch itself. Subtle difference, just felt like mentioning that, idk.

can wait the part 3 :-D

5:01 looks so satisfying.

this goes waaay over my head

I'd love to see you guys build a 2 oscillator synthesizer. :)

LOL, the Propeller could also emulate the 6502.

This is an awesome series. What are the chances that you could share a bill of materials as well as a schematic

After you are done with making the case. Contact the Woz and ask him to sign the inside. Then it will be on office Apple computer.

When using the Propeller DIP you should always have 0.1uF bypass caps connected to the Vdd and Vss pins (on either side). It's a good idea with any chip, but a glitch on the power supply can knock out the Propeller's PLL if you don't include the caps.

never used the Apple I, but using CALL then the address of the monitor should take you from BASIC to the monitor. at least on the Apple II that I remember from when I was in grade 6.

A JOHNSON COUNTER?!?! They knew what they were doing when they named that chip! LOL!

Hey Ben, IDEA...build a Bluetooth portable speaker/s with battery, maybe even a touchscreen to adj volume and EQ..or even add a sd card slot to play music off of.

Hi Ben, I'm working on a project where I am going to mod the marque on an upright arcade cabinet to a DMD. Basically the goal is to make the DMD change based on the game being played. I want to recreate the style of a pinball machine, but for an arcade cabinet. So for example Pacman starts up through MAME, software running on the OS would let the DMD know that "Pacman" is running. The DMD would then show the Pacman animation. I'm working within the dimensions of 20"w x 4.5"h. I've explored several options. 1. ColorDMD. I'm not sure if the developers have released the tools they use to create stuff like Lord of the Rings ColorDMD 2. A combination of traditional 128 x 32 DND, PinDMD2 and so forth. Something like this: virtuapin.net/index.php?main_page=product_info&cPath=9&products_id=216 3. Saw a LCD screen in half and try and make it work before I die from toxicity ಠ_ಠ Do you have any suggestions? Even better could to do a show on this?

Love to built my own Lap-top some-day...

did someone notice that hi pitch freq in the background??? makes me annoyed

It seems like tactile hardware switches might be a bit tiring to type on. Probably the most affordable solution I guess.

6:30 Why does it have a high pitched (but not really even as high as tinnitus) sound when Ben turns on the power supply?

Funny to see a propeller been used, I like the build in VGA but find it a little disturbing to program. (Spin)

Maybe, an ASCII-keyboard is no longer an option, but what about a standard USB-keyboard, only with a single chip it could be converted into ASCII (I can imagine it, so a clever Chinese has made it before I even wanted it). Drilling and holing and stuffing is a lot of work, wiring the matrix too.

This is cool and weird and you took a byte out of apple

I'm amazed at this guy's intelligence! Damn! Is there anything he can't build?

Anyone else here finding this lockdown material in 2020?

It would been cool (though not very cost effective) to buy Cherry switches, probably the clickier kind of pleasurable Apple 1 experience

So in other words you are using a MUCH faster chip to drive input/output to the slower 6502 :D

Hi, I was wondering if there was anyway to connect two computers together to create one faster computer for gaming. If there is any way is it possible that you make a video on it. Thanks.

Awesome thank u

Looks similar to the Gateway Solo 1150 I own.

If I ever build an Apple I clone... dang it, I'm not interested in emulating parts of it in software. A propeller is overkill for what amounts to higher order glue logic. I'd build a PIA using a CPLD or FPGA to design the PIA hardware and put it into a single chip. You could even have encoded the ASCII keyboard and shift register RAM in one, and used a modern solution to recreate the hardware.

I would love to learn to do this kind of thing some day. I can catch what you're doing and understand probably 95 percent of it while watching you do it, but if I were to try doing it myself? *waves hand over head* I've got SO MANY projects I think would be cool to do if I had your talent though, like a custom Mantle/ AMD A10-based handheld gaming PC, or custom PC cases, or maybe building a super-multi-console by hand from the ground up (having originals on hand so I can flash the BIOS, of course,) and things like that. Or, you know, an Xbox 360 controller with the joysticks in the right location. That kind f thing. Until then, I'll simply watch your show and dream.

The Apple I is a great project to reproduce. If I only knew half of what you do Ben... Thankfully I don't have to. www.computerhistory.org/ I worked for many years. Many years have passed since those days.. but its still a feat what you've done. A project with a lot of love involved. Woz would be proud.

I need "Mul-timeter hahaha" as a ringtone

i've got some questions if someone can answer them : 1) so the 6502 go to the reset vector to see were it should start executing code after the reset? 3)how i can send caracters to the pia and how the pia send me characters for the display 4)is it ok if i dont put the krusader on the rom ? 5)does the 70+ wires effect the signals (causing the replica to not function) ?

could you please state a link where you get all the parts of the apple one I love apple and am interested in making one so can you please put a link where you get the parts for this project thank you that would be great

10:05 THEY LIVE WE SLEEP Nice reference :-)

hey are there any games that let you make cool circuits and stuff like this (excluding minecraft and other minecraft copies)

This is really cool, but I can't help but find it ironic that the Propeller MCU is more powerful than the actual Apple I hardware.

Ben would it we a great idea to make aportable arduino programmer in one of your future apisodes?

How are there still 6502s? Are these vintage or are they still used for some applications today?

Why doesn't anyone ever put the semicolon after the end quote on the print statement. The display is so much more interesting.

hey Ben could you do a Apple 1 Replica again but doing with eagle circuit board please or the Apple lisa

Ben please can you answer this question, Is the propeller and the PIA programmed or are they just wired for convinience !?

what cad tool was Ben using for the keyboard?

Ben i want you to have my childer this project is amazing

he's making this a laptop? i thought the point was to make it as if Steve and Steve were making a more "legit" version of it in the 70's? meaning an old vacuum tube screen and not a laptop form

Cherry MX series would have been better for a keyboard. After all you could also 3D print your own key caps and voila - an old Apple I or II keyboard.

So.... That keyboard will ghost like hell?

14:45 lmao, ben had to print the keyboard so he knew where the keys are at.

can you make a cintiq type thing with a monitor and graphics tablet

Honestly... the propeller could probably emulate the 6502 at a higher clock speed too...

What would u even do with that? Real question I'm curious

What ic was used to connect display?

Sorry for my bad writeings it hard to type on a keybaord of your phone.

How does he interfaces it with the laptop?

lots of wiring... do you have some techniques to speed it up ? could you show them ?

Isn't the propeller as powerfull as the 6502? Kinda defeats it's purpose. I do really like the project though.

At 11:35 .... Where's the CLEAR key? This is the one key that the Apple 1 had, but not the Apple II.

I think you had all the buttons written backwards on the back

LOL! The Propeller runs at 80Mhz and we are attempting to build a 1Mhz computer!

He likes pointing with tweezers, but the question I want to know the answer to is "Are they Non-Megnatic?"

Dude. what 3d printer do you use?

And it is a McIntosh Apple that Ben is eating.... nice! =)

needed to be a Macintosh 🍎

i would want to do something like this to make a commodore protable, buy i know very well I'd probally end up with a fire

Am I the only one who hears a high pitch monotonous beep throughout the majority of the video? It's almost like tinnitus but when I hit pause on the video, it goes away.

Team multi-meter 4EVA!

2nd... damn!

Meh... you do know that if you go using it you could do all this inside the Propeller and call it a day? If you go and make a retro computer remake you should have used something that would resemble the timebase and use CPLDs for chips not obtainable anymore. But not a MC that could do everything on itself in a single chip solution.

8 bit bus... 8 bit system? The i8088 had a 20 bit address bus and an 8 bit data bus, yet it was binary compatible with the i8086, which had a 20 bit address bus and a 16 bit data bus.

Will the Keyboard have anti ghosting and LEDS, u gotta have all that! Right, guys?

I wish I understood all of this

3:50 not mul-tie-meter either

Your power supply makes a high pitched whine that is very audible in this video :(

how many have smirked, when they hear...Johnson counter..... :o

Doesn't seem like the first or the second minute or scripted or that was just me.

you have quite an impressive Johnson (counter)

No n-key rollover, no thanks.

HE ISN'T EATING A HOT POCKET? ITS THE END OF THE WORLD!!!!!

Apple 1 Replica Part 3 please?

today's lesson sewing with wires

I saw the first installment of this, and I was afraid of this (the circuitry not having much resemblance to the Apple 1 or II). This is in no way a replica of the Apple 1. Heck talks at 1:20 about the Apple 1's video ram being "accessed with shift registers" - no, it was accessed with TTL counters on the alternate half-cycle of the 6502's clock, quite similarly to Don Lancaster's Cheap Video board. The shift register then received the value of a character generator ROM (for text mode) or the direct byte from memory (for graphics mode) and clocked it out serially as NTSC video. This wasn't "kinda slow," it was the exact speed needed to generate the video signal at the resolution used. Using hardware to access RAM this way to generate video was an integral part the Apple 1 and II, as well as some other computers at the time. One thing Wozniak did not have to generate his video was a propellor chip! For a true replica of the Apple 1 board, look up the website of Mike Willegal. He also has a short interview with Wozniak about the Apple 1 video generation.

im first. and now what?! To be on topic: you typed ff0.ffff so it displayed more things than you wanted.

felix: fun job my ass!

I can't believe you don't actually show how any of this is made... You just show off what you did but there are no explanations or helpful advice AT ALL. Do people watching this seriously leave thinking they're smarter or something?

11:36 ACSII...

nnneeed apple now....must byte.....

STEM academy The Evil Within anyone?