Search found 176 matches

by PiyoTaro
Wed Apr 24, 2019 7:10 pm
Forum: ZX Spectrum (and Clones)
Topic: Design a small Sound card for Next
Replies: 23
Views: 2645

Re: Design a small Sound card for Next

[2019/4/30] Of the posts below, the drawings and photos have been revised with the latest posts. (This thread is posting my thought process. As soon as I confirm that the hardware works, I will set up a new thread as a "software development".) This project aims at a small FM sound card that can be ...
by PiyoTaro
Sat Apr 20, 2019 6:30 pm
Forum: ZX Spectrum (and Clones)
Topic: Design a small Sound card for Next
Replies: 23
Views: 2645

Re: Design a small Sound card for Next

[2019/4/30] Of the posts below, the drawings and photos have been revised with the latest posts. (This thread is posting my thought process. As soon as I confirm that the hardware works, I will set up a new thread as a "software development".) ーーー This project aims at a small FM sound card that can...
by PiyoTaro
Fri Apr 12, 2019 7:25 pm
Forum: ZX Spectrum (and Clones)
Topic: Design a small Sound card for Next
Replies: 23
Views: 2645

Design a small Sound card for Next

https://www.specnext.com/forum/download/file.php?id=550 June 4, 2019: The prototype module has been activated. The sound chip address has been changed to '$xxF7' due to a conflict with ZXSpectrumNext internal peripherals. I'm also wondering whether to design a new printed circuit board. The prototy...
by PiyoTaro
Sun Mar 31, 2019 12:53 pm
Forum: ZX Spectrum Next
Topic: Musical potential of the NEXT.
Replies: 92
Views: 17785

Re: Musical potential of the NEXT./Demonstration video existed on November20,2018 "First attempt to add FM sound to TBBl

2. TS-FM Problem: Last September I received a reply about the implementation of FM Sound. However, the announcement of "rejected for copyright reasons" is not found except this reply. The FM chips are too big to fit in the zx next architecture in current board's fpga - this is the reason they are n...
by PiyoTaro
Sat Mar 30, 2019 9:37 pm
Forum: ZX Spectrum Next
Topic: Compatibility problem with TurboSound FM (register expansion of TurboSound Next interferes)
Replies: 10
Views: 1662

Re: Compatibility problem with TurboSound FM (register expansion of TurboSound Next interferes)

I would like to ask questions in other forums about adding " PSG Clock (=1.75MHz)" to the software operating conditions. (I did not know that zxart is a tslabs site) A reference site that is referred to for the "pitch" problem: "Spectrum Sound PSG (Programmable Sound Generator)"in "ZX Specification...
by PiyoTaro
Sat Mar 30, 2019 9:35 pm
Forum: ZX Spectrum Next
Topic: Musical potential of the NEXT.
Replies: 92
Views: 17785

Re: Musical potential of the NEXT.

I started designing my own Sound card. Postscript 2019/3/31: I thought that the expansion port was driven at 14MHz, and because I chose a "74AC" class logic IC, six logic ICs were needed for "Negative logic OR combination". It decodes two low-cost OPN2 (YM2612/YM3438), OPNA and OPNB. A conflict is ...
by PiyoTaro
Sun Mar 24, 2019 4:11 pm
Forum: ZX Spectrum Next
Topic: Compatibility problem with TurboSound FM (register expansion of TurboSound Next interferes)
Replies: 10
Views: 1662

Compatibility problem with TurboSound FM (register expansion of TurboSound Next interferes)

Append: 2019/4/13 1. I am requesting "sound expansion for the game BGM". I'm not an instrument store. 2. I thought that the specification of "ZXSpectrumNext 's extension port" could be connected to the original ZXSpectrum 3+ peripherals. However, I found a conversation in FB that "the expansion mod...
by PiyoTaro
Sun Mar 24, 2019 2:58 pm
Forum: ZX Spectrum Next
Topic: Musical potential of the NEXT.
Replies: 92
Views: 17785

Re: Musical potential of the NEXT.

1. The material about ZXNDMA on this site was updated on February 25 this year, and the reasons for not being able to add interrupts etc. have been added, but there is no demonstration yet. No one has developed a "MML-based music driver" to be able to use the modulated sound by AY's hardware envelop...
by PiyoTaro
Sun Mar 24, 2019 12:23 pm
Forum: ZX Spectrum Next
Topic: "PiTubeDirect" Pi co-processor system for BBCmicro (at FB)
Replies: 4
Views: 632

"PiTubeDirect" Pi co-processor system for BBCmicro (at FB)

Migrated from another thread. Had no trouble reading the specnext group https://www.specnext.com/forum/viewtopic.php?f=6&t=1352 (On February 23rd weekend, when trying to display a publicgroup on FaceBook...) Since it seems that the article of "co-processor" to which David Ball was posted on Februar...
by PiyoTaro
Sun Mar 24, 2019 12:16 pm
Forum: ZX Spectrum Next
Topic: Had no trouble reading the specnext group
Replies: 15
Views: 2217

Re: Had no trouble reading the specnext group / out of the title of this thread

On March 13, there was a report that there was a global connection failure at FB. However, the "public group" was viewed normally. P.S. Since I did not explain "Tube" of "BBC Micro" (I was mistaken for BBCMicro as a Spectrum compatible machine while fighting with Google translation), I corrected the...