Apple II

2gs programming

Submitted by retrobyte12 on October 3, 2018 - 10:35am

I'm thinking about learning assembly language to program a game, and I want to use the Apple 2gs. I've never really owned one, and only used it few times. I'm intrigued about its graphics and sound, and being able to use 16-bit registers. I'm used to programming in BASIC on Commodores, and would like to use a similar setup, but playing with a 2gs emulator, I'm a little confused.

 

Forums: 
Apple II

Help Recognizing Apple II Logicboard

Submitted by Manzana2 on October 3, 2018 - 9:14am

Hello,

Some weeks ago I adquire an Apple II motherboard, but not sure if is a clone or original Apple... some months ago a somekind was seen at eBay standing that was a Rev.04 motherboard. But in my board   820-0014-01 (Rev.01) is written Under the 6502. 

  https://www.ebay.com/itm/1986-Vintage-Apple-IIe-Computer-Motherboard-820-0087-E-/183268201002?oid=332705431805

As it can be seen, serial numbers are the same.

I've attached some pictures for helping to identfy it.

Thanks. 

Forums: 
Apple II

How do you dump a ROM? (Character)

Submitted by TedThompson on October 3, 2018 - 1:28am

A link would suffice, I have this character ROM that I'm fairly sure is aftermarket. May be worthless but I thought it might be good to dump since I don't see any info anywhere. 

 

Sticker on top says

(c)1984 CLSYSTEMS

MODEL: 

SERIAL:

With ALA hand written somewhat beside both model and serial. 

Just in case anyone recognises it. 

Forums: 
Apple II

Is it broken? Odd Platinum //e behavior

Submitted by TedThompson on October 2, 2018 - 8:31pm

I have what appears to be a Platinum //e motherboard which I was assured worked by the ebay seller (we all know what that's worth)  

 

  • Upon power up it displays this  https://imgur.com/a/vsIC3rF Every time. The image is stable. If I hit ctrl reset the screen changes randomly. 
  • The board does NOT have an 80col card or any other card. 
  • The Character ROM is this http://imgur.com/cPA4J6G

 

So before I pull out the scope and chase my tail:

Forums: 
Apple II

Strange Character ROM connection

Submitted by mafrmt00 on October 2, 2018 - 6:34am

I've recently restored this Apple II+ Clone. It has a UM2316 as character ROM. The Chip itself is replaceable with a 2716 eprom. But none of the standard Apple II Character ROMs works.

The connection between the ROM and the 74166 totally diffrent from what it is in a regular II+.

Does anyone regognize this board? Are there any Informations / ROM images available anywhere?

 

 

Forums: 
Apple II

Strange Character ROM connection

Submitted by mafrmt00 on October 2, 2018 - 6:34am

I've recently restored this Apple II+ Clone. It has a UM2316 as character ROM. The Chip itself is replaceable with a 2716 eprom. But none of the standard Apple II Character ROMs works.

The connection between the ROM and the 74166 totally diffrent from what it is in a regular II+.

Does anyone regognize this board? Are there any Informations / ROM images available anywhere?

 

 

Forums: 
Apple II

Quark Terminus

Submitted by 6502enhanced on October 1, 2018 - 12:50pm

Does anyone have „Terminus“ from Quark (or knows where I can download it)

Thanks

Forums: 
Apple II

<Circuit problem?> video output problem

Submitted by clumpwork on September 30, 2018 - 10:40am

Hello. I am newly to join this forum. 

I have Apple II plus (Rev.4) which I bought I was high school student(38 years ago!).

I kept it for a long time and draw out to share the excellent machine with my son.

Forums: 
Apple II

GSLABS 4MB but "Not enough Ram?

Submitted by ringquest on September 27, 2018 - 8:41pm

Hi all! It was a long hard struggle, but on my IIgs Woz edition I learned and then:

-Updated the 30+ year old battery

-Added 4MB RAM via GGLABS

-CFFA3000 upgrade!!! NICE!!

-Updated the ROM from zero  to version one.

 

Forums: 
Apple II

Is there an Apple II <-> PS/2 Keyboard adapter?

Submitted by TedThompson on September 26, 2018 - 1:53pm

I've found various ones for the II-II+ models where the encoder is on the keyboard it's self, but none for the ][e or //e models with the AY-5-3600 on the motherboard.

 

I've got it in my head I could roll my own with a small Arduino (Nano maybe...) but I detest reinventing the wheel, so I thought I'd ask you folks if it's out there and I (or Google) has simply missed it.

Forums: 
Apple II

Pages

Subscribe to Apple II