Denial

srowe

If this caused the bits of the first byte to be shifted one to the left (like what an ASL would do for example) it would result in the byte value being multiplied by two. Check the contents of RSSTAT ($0297) after receiving the first character, I bet you have $02 indicating a framing error. You sho...

srowe

This was a cart made and distributed in Europe by Handic, there's a picture of it at the bottom of this page

https://www.softwolves.pp.se/cbm/minaburkar/vic.en.html

srowe

I was just working with the keyboard decode tables this morning, and I was wondering about the purpose of this whole page of NOPs. And not necessarily a bug, but they’re not being very elegant about setting the decode table index, either. I've recently disassembled the VIC-1001 ROM in this area, I'...

srowe

The firmware in the VIC-20 is a remarkable feat of engineering (given the primitive development and debugging tools available at the time it was written). While compared to some other computers of the era it is relatively bug-free there are a number of issues present. BASIC VERIFY Result When the VE...

srowe

My question is, is this interrupt routine correct? Can the jump to the $EABF routine be implemented differently? That depends on what you want happen during an interrupt. The KERNAL routine is this https://eden.mose.org.uk/gitweb/?p=rom-reverse.git;a=blob;f=src/basic_kernal.asm;hb=HEAD#l10602 it's ...

srowe

A new release (1.7) with another new feature. I've added a Minipaint image slideshow viewer to the "FE3 Utilities" menu (F5). Each file is displayed in turn, key press/joystick moves to the next image. Press [STOP] to exit.

srowe

chysn wrote: ↑Tue Nov 21, 2023 9:49 am
I automate most non-coding tasks with shell scripts. For converting BASIC text to tokenized BASIC, like Mike said, use petcat.

You can also do this with cbm-shell

Code: Select all

cbm-shell "unlist example.txt example.prg" quit

srowe

Not quite the same but I found this

https://www.ebay.com/itm/314765290463

srowe

Wayne / Art Ravers wrote: ↑Wed Nov 15, 2023 2:24 pm I have already acquired a Kernal Rom Chip, just need to get a 6502 now - Any suggestions on Places that are reliable please ?

I'm pretty sure I've ordered parts from this guy

https://www.ebay.co.uk/itm/325396424917

srowe

DrVeryEvil wrote: ↑Wed Oct 25, 2023 2:38 pm A quick tip, all the data and address line are accessible from the character ROM chip.

Back in the 80's I made an internal 3K expansion module that fitted into the socket

https://www.sleepingelephant.com/ipw-we ... php?t=7016

srowe

I've updated the user guide I wrote to include all the new features

https://eden.mose.org.uk/download/FE3%2 ... 0Guide.pdf

srowe

chysn wrote: ↑Sun Oct 22, 2023 9:55 am I'm not sure which SD2IEC I have. It doesn't really say anything on it except for "sd2iec". When I run the command "X?" it returns

Read the command channel immediately after boot, it returns the firmware version.

srowe

A new release (1.6) with another new feature. I've added a simple directory/image navigator (F2 from the main menu). This allows you to easily traverse a directory tree on the SD card, including entering images, and then boot to BASIC without needing loader files. Download link: https://eden.mose.or...

srowe

I don't think it's possible to create a single .PRG file for this game. It contains several files that all load to the same address (except the last one) (cbm) file 0:* LOADER (SYS850): PRG, size=69 bytes, start=$0352 STAGE1: PRG, size=4098 bytes, start=$1000 STAGE2: PRG, size=1026 bytes, start=$100...

srowe

Mayhem wrote: ↑Tue Oct 17, 2023 3:22 pm I think what's more surprising is there are PAL Vic20 from Japan. They are all in the 5xxxxx serial number range I believe.

The one I have has a 5xxxxx serial number.

Denial

Search found 1333 matches

Re: RS232 value of first character is doubled

Re: Commodore [Vic-2012] VIC-Graph cartridge, per Jim Brain "CBM list"

Re: Bugs & Quirks in the VIC-20 BASIC & KERNAL ROMs

Bugs & Quirks in the VIC-20 BASIC & KERNAL ROMs

Re: Help needed for "Frames Per Second Counter / Monitor"

Re: "Ultimate Expansion" - new firmware for FE3

Re: Vic20 code editors / IDE for Mac

Re: User Port PCB?

Re: De-yellowing your VIC-20 case

Re: 6560 Maximum Memory

Re: "Ultimate Expansion" - new firmware for FE3

Re: File Command Errors

Re: "Ultimate Expansion" - new firmware for FE3

Re: Mega Vault by Imagine .PRG file

Re: VIC-1001 main board