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Re: Applesoft Lite - Why no trig functions?

Applesoft Lite was originally intended to fit it in EEPROM on the Replica-1, to replace the built-in Integer BASIC. For that to happen it needs to be less than 7936 bytes. (8KB minus 256 bytes for the monitor). Applesoft on the Apple II is 10KB, so some stuff had to go to make everything fit. I supp...
by cowgod
Mar Sat 10, 2012 4:22 pm
 
Forum: replica 1 General Discussion
Topic: Applesoft Lite - Why no trig functions?
Replies: 4
Views: 9145

Re: Getting into BASIC

When you press the reset button on the Replica-1, it will start running the "monitor" program, which allows you to enter a few simple commands to examine and modify data in memory and to execute programs. The "E000R" command tells the monitor program to "start running the pr...
by cowgod
Aug Tue 03, 2010 5:53 pm
 
Forum: Troubleshooting
Topic: Getting into BASIC
Replies: 5
Views: 10220

Re: Getting into BASIC

Vince, I think this question was asking about the Replica-1, not the Altair. :)

You don't have to transfer anything to use BASIC the Replica, the BASIC is in ROM. Just power up, hit the reset button, then enter: E000R and hit return.

Tom
by cowgod
Aug Mon 02, 2010 8:51 pm
 
Forum: Troubleshooting
Topic: Getting into BASIC
Replies: 5
Views: 10220

Re: Affordable USB EEPROM Programmer

I use a USB programmer made by Batronix in Germany. The one I have is an older discontinued model but it is similar to the current BX40 model. The 32-pin models are even less expensive.

http://www.progshop.com/shop/programmer ... ammer.html

Tom
by cowgod
May Fri 07, 2010 8:08 pm
 
Forum: Venues, projects and off topic stuff - NO SPAM
Topic: Affordable USB EEPROM Programmer
Replies: 6
Views: 18041

I was thinking about this a while back, it would be cool to get at least the kernel and TCP/IP portions of Contiki on the Replica. The GUI wouldn't be practical, due to the nature of the Apple-1 display. Then all we'd need is a network interface, I think it should be relatively simple to put togethe...
by cowgod
Sep Thu 11, 2008 11:21 pm
 
Forum: Software
Topic: Anyone tried porting Contiki?
Replies: 2
Views: 8171

Hmm, that doesn't look like valid code. If everything else is working, I'd say the Krusader section of your ROM got scrambled somehow. Perhaps Vince will have a better idea.

Tom
by cowgod
Sep Thu 04, 2008 1:02 pm
 
Forum: Troubleshooting
Topic: Krusader not starting
Replies: 7
Views: 16060

Is your machine working otherwise, in BASIC for example? It sounds to me like there could be a problem with your ROM.

Can you try entering F000.F01F in the monitor and post the output? Maybe we can see if something weird is going on.

Tom
by cowgod
Sep Thu 04, 2008 12:02 am
 
Forum: Troubleshooting
Topic: Krusader not starting
Replies: 7
Views: 16060

Cool, I hadn't heard any feedback at all, so I just assumed nobody was interested. :( Glad to hear someone at least gave it a try!

I've also updated my Applesoft Lite page with the notes you mention and hopefully clarified things a little bit. The RAM version is available there now too.

Tom
by cowgod
Sep Wed 03, 2008 7:43 pm
 
Forum: Software
Topic: Applesoft Lite - RAM version
Replies: 6
Views: 12585

Yeah, I figured most people probably can't program a new ROM. I'm not sure if anybody besides you and me even tried the ROM version so far, although quite a few people seem to have downloaded it. It wasn't as hard as I thought to make it run from RAM, so I'll build both if there are any new versions...
by cowgod
Sep Tue 02, 2008 1:50 pm
 
Forum: Software
Topic: Applesoft Lite - RAM version
Replies: 6
Views: 12585

Applesoft Lite - RAM version

Howdy folks, If anyone is interested, I put together a version of "Applesoft Lite" which can run from RAM instead of ROM. This version loads at $6000, but should be functionally identical to the last ROM build. Binary image: http://cowgod.org/replica1/applesoft/applesoft-lite-0.4-ram.bin H...
by cowgod
Sep Mon 01, 2008 2:37 am
 
Forum: Software
Topic: Applesoft Lite - RAM version
Replies: 6
Views: 12585

It became apparent when I disassembled their file that there wasn't much to see. It looks the recording they used was even already available on the web, they didn't even dump the tape themselves. They certainly made it sound like a much bigger deal than it actually is. Oh well. :) The 2-byte differe...
by cowgod
Jul Wed 16, 2008 3:12 am
 
Forum: replica 1 General Discussion
Topic: BASIC from tape
Replies: 5
Views: 9367

That was more or less my thought, it just didn't seem to make a lot of sense. However, it appears that may indeed the case, looking at the schematics. It's kind of hard to read, but it looks like any address in $Dxxx which has A4 set should work. A0 and A1 are connected to the register select lines ...
by cowgod
Jul Tue 15, 2008 10:32 pm
 
Forum: replica 1 General Discussion
Topic: BASIC from tape
Replies: 5
Views: 9367

I compared this "new" version to the BASIC in the Replica-1 ROM... there's exactly 2 bytes which differ, but the changes don't seem to make sense to me. In the Replica ROM, at E3D5, there's: BIT $D012 BMI #$FB STA $D012 In this new file, the $D012's are replaced by $D0F2. Anyone have any i...
by cowgod
Jul Tue 15, 2008 8:59 pm
 
Forum: replica 1 General Discussion
Topic: BASIC from tape
Replies: 5
Views: 9367

BASIC from tape

Anybody see this? http://www.pagetable.com/?p=32 Looks like someone dumped the Apple I BASIC tape. Pretty sweet. They say this is the first "perfect" copy, I wonder if it really differs from the version we already have. There's a discussion about it over on Slashdot too http://entertainmen...
by cowgod
Jul Tue 15, 2008 1:37 pm
 
Forum: replica 1 General Discussion
Topic: BASIC from tape
Replies: 5
Views: 9367

Looks sweet, Vince! Definitely nice to have the onboard slot.

Tom
by cowgod
Jun Tue 24, 2008 1:14 pm
 
Forum: replica 1 General Discussion
Topic: Third Generation replica 1 coming soon
Replies: 6
Views: 9569
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