The little bit i've used MONOTONE left a bit disapointed feeling, I haven't been able to get any nice drum sounds out of it. The effects are lacking and kinda slow. Maybe one day I'll have something better :3

Making the PC Speaker beep with your own code is pretty easy on DOS - just get QBasic or TurboPascal and use the built-in sound commands (that's how I started back in the day, hehe). If you want to program it directly at machine level, then PC is actually a very difficult target, at least if you want to do anything funky like polyphony. In that case I'd recommend picking a less messy and less complex platform to start with. Arduino or anything AVR based in general is much easier to get started on.

Other than that, I got a TI-82, been trying to make something with it. I'll get there eventually though. Mainly I make music in FamiTracker, occasionally LSDJ and I'm learning FM with AdlibTracker 2 and a OPL3.

If you want to take look or listen to my musical happenings, I post on youtube at youtube.com/@orjis. It has almost all of my work and more is to come. (I'm behind on uploads...)

here's PC Speaker song of mine https://youtu.be/F8Yo4QVe3rU?si=hTPNfsRK26J1-k2Q

I hope y'all have a good day! :3

I'm Andy, based in the UK. I am an old school Sinclair fan, growing up with the work of Tim Follin, David Whittaker and Ben Daglish.

At the moment I'm designing a new Z80-based computer, with an 8Mhz processor and a 1-bit audio path. I'm trying to figure out the best audio routine to show it off, but still haven't quite got my head around converting for the different CPU speeds - the core frequencies aren't too bad, but when there are effects and tempo to consider as well, my head explodes!

I'll pop some details of the circuits in the other forum if people are interested - it has a simple one transistor amplifier and cellphone speaker so though it's not the loudest, it should be able to play some interesting music.

eg this is the start off the interrupt from Bordertron for 16k

; time counter
A_halt            ld a,128            ;  7t        background colour
                  out (254),a         ; 11t[4,3,4] contended
                  ld hl,23672         ; 10t 
                  inc (hl)            ; 11t        256*1/50 sec max =5.12 seconds
                  jr nz,nsec          ; 12t 7+11+10+11+12=52
t2a  equ 7 +11 +10 +11 +12
                                      ; -5t
                  inc hl              ;  6t
                  inc (hl)            ; 11t
                  jr nz,nmin          ; 12t -5+6+11+12=24  = 21.84 minute
t2b  equ 6 +11 +12 -5
t2zx  equ  -5  +6 +11 +12   ; pasmo BUGGED RESULT ! the '-' sign is added AS LAST SUM INFLUENCE by which a false negative number is created !! https://worldofspectrum.org/forums/discussion/comment/967124/#Comment_967124
                                      ; -5t
                  inc hl              ;  6t
                  inc (hl)            ; 11t if 255 aswel, 93.20 hour =3.88 day's are done!
                  jr tdone            ; 12t -5+6+11+12=24
t2c  equ 6 +11 +12 -5

nsec              jr $+2  ;12t
                  jr $+2  ;12t=24
t2b2  equ 12+12
nmin              jr $+2  ;12t
                  jr $+2  ;12t=24
tdone:

t2c2  equ 12+12
t2 equ t2a + t2b + t2c  ;  =99t in 26 bytes
A_tc2  equ A_tc1 + t2

;big key check here
                  ld hl,keys+8        ;10t
                  ld de,keys2+8       ;10t to old key
                  ld bc,8             ;10t
                  lddr                ; 8*21-5 t=163t

                  inc hl              ; 6t 
                  ld bc,0xfefe        ;10t
ky                in a,(c)            ;12t 8 x contended 
                  ld (hl),a           ; 7t
                  inc hl              ; 6t
                  rlc b               ; 8t
                  jp c,ky             ;10t
                                      ;   10+10+10+(8*21)-5 +6+10+ 8*(12+7+6+8+10)= 553 tstate = 2.46875 scanline !!

Now i want to place that OUT 254 on the correct spot for a steady 224 tstate steprate. probably with an EXX. but, thats just the thought.

Hello, i have not much to offer. my own sound code it 4-bits for ay. Bit i like asm and z80 code and hope to learn here. I made 2 or 3 dis-assemblies from 1bit speech. there is a 'crosover' routine that uses ay for its 1bit speech , its called "ble-ble' i think.

Hi Utz, not perse 1bit sound but i try to make a spot in it.
but its more the thoughed.
with a 224 scanline procedure you could have a 1 bit sound sqeuch
with about 320 scanlines and 50  frames thats only about 16,000  BITS per second,equ 1,8 KB per second ??