Included tags: apple 1 ×
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HAMURABI.BAS and its dystopian lessons

Apple Fritter about 2 months ago

Hello, I wrote an article about playing HAMURABI.BAS on an apple 1 replica and developed a (surprising) winning strategy, https://www.jeffquast.com/p... winning strategy is to systematically starve 3% of the population each turn, to wis …
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Apple 1 - My Terminal Circuit Works, Next Microprocessor Circuit

Apple Fritter about 4 months ago

Success - my Apple 1 Terminal Circuit is working.Changed the 74LS161AN in D8 to 74161, and both C4 and C14 74LS157 to 74157.Many thanks for the many people who have helped me get to this point.Looking at Post #21 of french-ie-newb-ie-apple... onl …

Apple 1 Power Supply - Accpetable Noise Level on -5 Volt DC Line

Apple Fritter about 4 months ago

I read this post:https://www.applefritt... added the fuses as suggested, with LED indictors as to the state of the fuse, proved very helpful.I was not too comformable about the design of the Apple 1 pow …

Apple 1 Boot Up Tests

Apple Fritter about 4 months ago

I'm still trying to get my Apple 1 Terminal Circuit working correclty.https://www.apple... Apple 1 does not complete Point 3 below, the "@" do not flash.I've ordered 74161, to replace the 74161A, use …
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Apple Replica - 555 Astable Circuit

Apple Fritter about 4 months ago

I'm slowly checking my Apple 1 Replica trying to get the video working, i.e. populated Row's D, C and B2.Waiting for parts coming to Australia, means I have time :-)I checked the timing of the 555 Cursor timing, theoretic time period is 457 msec, and mine …
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Powering-up Apple 1 Replica for First Time

Apple Fritter about 4 months ago

Hi Everyone,  I've recieved lots of help over the last 3 months from people on this forum while I collected the components and built my first Apple 1.  I've followed Mike Willegal's "Apple 1 Mimeo Computer Assembly and Bring Up Guide", and am now at the …

Assembled GEN2 ACI and Datanetics keyboard

Apple Fritter about 4 months ago

I acquired some blank 2K bipolar PROMs and put together a few assembled GEN2 ACI for those who want the ACI in assembled form and tested. These have Bernie's useful extended format page PROM. You will find loading and saving programs using cassette record …
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Extra colors for hires graphics wanted ?

Apple Fritter about 4 months ago

As we all know, the Apple II can produce four colors in the HIRES mode, plus black and white (which are not "colors", but "shades". But what can I complain. Some computer folks are so uneducated that they pervert the meaning of words all the time. Such as …

Understanding the Apple 1's Function

Apple Fritter about 4 months ago

Hi All:I have a goal for 2024. :-)I am not an electrical engineer by trade or education, only by interest, which means I am not an EE.One of the goals I set for 2024 is to take my electronics understanding up a notch.  I am good at soldering and building …
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Apple 1 Start Screen

Apple Fritter about 4 months ago

I have noticed that I have never had the standard _@_@_@_@ start screen. There are always gaps or other characters inserted. Is this a symptom of a bad or failing component? I have never observerd issues with the computer otherwise. IMG_7597(1).jp …

French-ie, Newb-ie, Apple One-ie...

Apple Fritter about 5 months ago

Hello,I have started a clone of Apple 1.In few words :I living in Burgondy (france) and I am self-taught in electronics and sometimes I miss some pieces of the puzzle that will seem obvious to an engineer. I hope my questions will not seem too naive to you …

ACI ~ AIFF decoding ?

Apple Fritter about 5 months ago

Is there a specification for the format of program files in Apple 1 AIFF format?  Frequency, duration, etc. ?  I imagine I'm using the wrong search terms. TIA.  Happy Holidays.  MikeForums: Apple I …

PROMs, EPROMs, EEPROMs

Apple Fritter about 5 months ago

All, In the process of completing my list of parts, I am now trying to figure out what to do for the PROMs. I found P-LAB's daughter board to use an EPROM instead. But these days it seems that even finding a UV EPROM is not that easy, and in any case …
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SWTPC GT-6144 Replica for Apple 1

Apple Fritter about 5 months ago

I have been replicating the SWTPC GT-6144 graphic terminal since I saw from Apple1Registry.com that it was one of the peripherals used with Apple 1 and it gives graphical display capability to the computer. It displays graphic by the 6144 dots (64 columns …

Is there a StarTrek for Apple 1 BASIC?

Apple Fritter about 5 months ago

As the title suggests...  was there a version of the StarTrek (AppleTrek) game for the Apple 1's integer BASIC?  If so, where can I get it?  No joy in my searches, so far. TIA.  Happy Holidays.  Cheerful regards, Mike, K8LH (Michigan, USA)Forums:&nbs …

Apple 1 voltage problem

Apple Fritter about 5 months ago

AttachmentSize The screen when starting3.18 MB After my copy of Apple1 is started, the -12V voltage will be reduced to -11.5V in a few seconds and suddenly become 0V. Has anyone encountered this strange problem? If I do not insert AM1404APC, the v …
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GEN2 Apple Cassette Interface (ACI) board by Uncle Bernie

Apple Fritter about 6 months ago

As mentioned by Uncle Bernie in the Apple 1 forum, we incorporated his GEN2 ACI design into the Newton version of ACI gerber. We hide all the SMD components below the IC sockets (you have to use machined type IC socket though), so you have a much better A …

Apple 1 terminal section crashes soon after boot

Apple Fritter about 6 months ago

Hello,I'm building an apple 1 replica. I got the terminal section to output video (yay!). The output however does not seem entirely correct.For one the screen is all @'s. Am I correct in my understanding that it's supposed to be all "@_"? Or is it just com …

Hard to source components as of late 2023

Apple Fritter about 6 months ago

All, I am new here. I acquired recently an Apple 1 reproduction PCB, maybe without thinking things entirely through ;) I am now considering building my Apple 1 replica and I read many of the message on these forums. As of late 2023, in the absence of Unc …

Apple 1 weird crash

Apple Fritter about 6 months ago

Hi,I'm working on my second Apple 1, and I got a weird behavior: First, I was having the boot screen blinking correctly but @ was replaced with D and the whitespace was replaced with $. When I shorted clearscreen, I got still the @ replaced with D (blinki …
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Unified Retro Keyboard for Apple 1 or misc. ASCII $120

Apple Fritter about 6 months ago

For sale is one "everything but keycaps" best used with an Apple 1 replica or 1970's-era computers with ASCII interface, though it is also compatible with Apple II, II+, it will not fit in their cases because of the full set of keyswitches that are install …
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Unified Retro Keyboards for Apple II $120

Apple Fritter about 6 months ago

AttachmentSize iface-front.jpg1.92 MB For sale is two "everything but keycaps" for earlier Apple II, II+ and Replica 1 computers (not compatible with later apple II models!). $120 ea, FIFO sale as pictured :) a2-front.jpg …
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Macintosh 128k replica project

Apple Fritter about 7 months ago

Hi to all,I haven't written here for a long time. Since I built my Apple 1 Replica. A few years later, here I am again with a new project. A Macintosh 128k Replica, but this time my aim is to tackle this project to keep myself busy, due to health issues.Th …

Apple Schematics

Apple Fritter about 7 months ago

Kind of a wonky question here.A while back, I found some very nice pdfs of Apple 1 schematics.  I had them printed on cardstock and I have them as art on the wall.I thought about doing this for the II+ and IIe.  Finding schematics on Asimov or RetroActiv …

Apple 1 Byte Shop Case & Datanetics Replica

VCFed about 8 months ago

Just finished a labor of love - 4 months of woodwork, soldering, and testing to get a hyperaccurate Byte Shop case, Datanetics keyboard, and Sanyo monitor. Highly recommend the process for anyone interested in the Apple 1! A few replication tips: - Foun …