Search found 24 matches

by russell-s-harper
Fri Mar 21, 2025 2:37 am
Forum: Programming
Topic: fopen() with append
Replies: 1
Views: 1767

fopen() with append

Just a quick question. I know fseek(...) isn't implemented, so does that mean fopen("file.dat", "ab") doesn't work either?
by russell-s-harper
Thu Dec 26, 2024 7:15 pm
Forum: Programming
Topic: Determine if an instance is running in the emulator vs on real hardware
Replies: 3
Views: 5135

Re: Determine if an instance is running in the emulator vs on real hardware

desertfish wrote: Thu Dec 26, 2024 2:46 pm There are emulator-specific IO registers see https://github.com/X16Community/x16-emu ... -registers
the last 2 can tell you if you're on the emulator or not
Thank you. I can work with this! /Russell
by russell-s-harper
Thu Dec 26, 2024 1:33 pm
Forum: Programming
Topic: Determine if an instance is running in the emulator vs on real hardware
Replies: 3
Views: 5135

Determine if an instance is running in the emulator vs on real hardware

There is a bug in the hardware VERA in that the FX Line Helper in 4bpp mode doesn't correctly draw lines in octants where "sometimes horizontally increment" applies. Based on the discussion in the CX16 Video Discord https://discord.com/channels/547559626024157184/549247967945687071/1317257...
by russell-s-harper
Sun Dec 08, 2024 12:15 pm
Forum: Works In-Progress Discussion
Topic: Request to try out joystick interfacing program
Replies: 3
Views: 6548

Re: Request to try out joystick interfacing program

Thank you very much for testing. I was confused by how CC65 labels the joysticks vs how CX16 labels them. It was only when I read a similar thread in one of the forums here that I figured out that CC65 JOY_1 refers to the keyboard emulator. I'm waiting now for a fix to the VERA FX Line Helper in 4 b...
by russell-s-harper
Wed Dec 04, 2024 12:24 am
Forum: Works In-Progress Discussion
Topic: Request to try out joystick interfacing program
Replies: 3
Views: 6548

Request to try out joystick interfacing program

I previously requested users to test a demo in progress using actual hardware, and there were issues with rendering and the joystick. The rendering issue was traced to a problem in VERA, so that leaves the joystick. After some research, I think the issue was that I was using JOY_1 as the joystick to...
by russell-s-harper
Sun Dec 01, 2024 9:57 pm
Forum: Works In-Progress Discussion
Topic: Request to try out demo in progress on real hardware
Replies: 9
Views: 9675

Re: Request to try out demo in progress on real hardware

In my Google Drive is a program SAMPLE.PRG which draws lines at 4 bpp using VERA FX https://drive.google.com/drive/folders/1unw3MgF0ji-n1Vk2guOfw-t5dZ-2rEtD?usp=sharing. Attached are outputs from an emulator r48 (the PNG), and actual hardware (the JPG). The emulator is correct, while it was confirme...
by russell-s-harper
Fri Nov 29, 2024 9:46 pm
Forum: Works In-Progress Discussion
Topic: Request to try out demo in progress on real hardware
Replies: 9
Views: 9675

Re: Request to try out demo in progress on real hardware

MooingLemur and others in the CX16 #general and #video discords confirmed that there is an issue in the way VERA handles certain kinds of lines at 4 bpp. Thanks everyone for your help here! I now have to work on the joystick issue... /Russell
by russell-s-harper
Wed Nov 27, 2024 9:27 pm
Forum: Works In-Progress Discussion
Topic: Request to try out demo in progress on real hardware
Replies: 9
Views: 9675

Re: Request to try out demo in progress on real hardware

Thank you for the advice. I have reached out there. /Russell
by russell-s-harper
Tue Nov 26, 2024 9:11 pm
Forum: Works In-Progress Discussion
Topic: Request to try out demo in progress on real hardware
Replies: 9
Views: 9675

Re: Request to try out demo in progress on real hardware

Based on the screen shot "the_seb" sent to me, I have a suspicion that differences in the VERA multiplier might be the cause of the messed up rendering. I've attached a version EXPLORE2.PRG which uses straight C multiplication. The EXPLORE.DAT file is the same. It can't be attached, but it...
by russell-s-harper
Tue Nov 26, 2024 4:10 am
Forum: Works In-Progress Discussion
Topic: Request to try out demo in progress on real hardware
Replies: 9
Views: 9675

Re: Request to try out demo in progress on real hardware

"the_seb" confirmed his hardware is up-to-date w.r.t. versions, so it's likely a difference between the emulator and hardware. I will try to create some minimal code samples to demonstrate the problem. /Russell