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PostPosted: Wed Jun 13, 2018 12:52 pm 
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Joined: Fri May 08, 2015 7:17 pm
Posts: 2308
Location: DIGDUG
This will be my entry for the Compo. It's unfinished, but I would like to get some feedback on the user interface. ... Chippy.nes

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I will add the instructions a little later, when I get some more time. Basically, B = left click = add a note, A = right click = copy the note. Double-click = erase note. Start = menu. Test 'Play' with the arrow on the top right. Proper 'Play' is accessed through the Sequencer menu.

To do -
-write title song, and maybe example song
-add load / save feature
-animate playing the song
-consider adding fx like vibrato

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Last edited by dougeff on Thu Jun 14, 2018 6:15 am, edited 1 time in total.

 Post subject: Re: Chippy -
PostPosted: Wed Jun 13, 2018 2:56 pm 
Formerly WheelInventor

Joined: Thu Apr 14, 2016 2:55 am
Posts: 1783
Location: Gothenburg, Sweden
Cats and synths. It's a thing.

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 Post subject: Re: Chippy -
PostPosted: Thu Jun 14, 2018 6:12 am 
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Joined: Fri May 08, 2015 7:17 pm
Posts: 2308
Location: DIGDUG

L/R/U/D - move the mouse pointer
Select - go between the editor, the Rt Menu, and Scroll mode
Start - go to Menu
B button = left click = add a note
-double-click = erase note
A button = right click = copy a note

Adding a note on top of another note will erase the other note,
even if it's on another channel.
BPM/END is processed first and applies to the notes above it.
'End' will end the Set early.
A blank spot is a 'note cut'. If you want a note to continue, you
have to use an instrument that doesn't end and put it on every
square that you want the sound.

Rt Menu
use A or B buttons to select an item.
Sample Play, starting at the current page, plays to the end of
the Set
1-8 Instruments (noise has its own instruments)
Select a set 1-4
Select a Channel (or BPM)

Once Sample Play is started, it will freeze the editor while the
song is playing. Press Select or Start to Stop the music.
If you need a BPM slower than the options, just put notes half as
often on the editor. Each slot is considered an 8th note by
default. If you consider each slot as a 16th note, the BPM is

The default BPM (if no BPM notes are put in) is 140.

Scroll Mode
<> arrows appear at the bottom of the Rt Menu.
R/L to scroll
Select to exit this mode

Start to choose an item
Select (or choose 'return') to return to the Editor

Square/Triangle Instruments
8 instruments are available to edit.
The left most 'duty' cycle is only available to the Square
Channel. 1 and 3 are basically the same. 0 is rough sounding and
2 is smooth sounding.

The right 15 numbers are the 'volume envelope'. Triangle Channel
doesn't have a volume, but 3-F will be interpretted as 'on' and
'0-2' will be interpretted as 'off'. A dash represents end of
note, and the previous number will repeat to the end of the note.

If you want silence, you should have a zero just prior to the end
of the note.

L/R/U/D to navigate
B button to decrease a number.
A button to increase a number.
Start to sample an instrument.
Select to go back to the Menu

Noise Intruments
8 instruments are available to edit. The main difference is that
you can edit the frequency of each instrument frame by frame.

Frequency of zero is a low frequency, and F is a high frequency.

Duty cycle of 1 is a more metallic sound.

Choose the order of how the sets play

U/D to select a row.
R/L to edit a row.
Select to Switch to the right side items.
Start to Select 'play' or 'return'

You can exit playback with Select or Start.

To do.

By default, the Triangle channel will play as seen, tuned like
the Square channels. You can set it to play an octave low, like
the actual hardware does.

Use caution 'reload' ing the default instruments. It will delete
any changes you made.

Start or A button toggles each item.

Important Note
If the BPM is more that 120, the end of an instrument's volume
envolope will never play. The music engine will have moved on to
the next note. The length of each note per BPM follows this

.db 18,15,13,11,10,9,8,7

So, at the fastest speed, only the first 7 numbers of the volume
envelope will play.

Also, if there is NO note, it works like a note cut. But, it
volumes down -4 each frame until it's zero (a fast fade out).
This is to improve sound quality of constant volume notes.

_________________ -- blog/tutorial on programming for the NES

PostPosted: Thu Jun 14, 2018 7:47 pm 
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Joined: Thu Aug 13, 2015 4:40 pm
Posts: 299
Location: Rio de Janeiro - Brazil
So, is this a music maker that runs on the NES? Sounds nice! It seems to be quite capable.
I didn't use it a lot, but I had a little trouble fighting the interface. For example, on the song play screen I kept pressing right to go to the "PLAY" button but it kept increasing the number instead. I think it'd be nice to nave a map of what each button does on each screen. Possible? Like, a bottom or side bar with a list of gamepad button and and its functions.

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