DonNews #01 10 января 1999

Железо

Iron - The scheme for a music processor.

                 IRON

(C) Dimon


     Here I will talk about different
bloat, which will allow you more
comfortable working on your computer.
Circuit implementation will be given for two
Spectrum-compatible computers is
Pentagon and Taganrog, since these machines
most prevalent in our area.
In today's issue will be presented
schemes for music processor, which can get rid of unnecessary 
problems associated with the use of muzprotsessora. So 
poehali.Dazhe if you do not have any problems with 
muzprotsessorom, I suggest you still reading this article.

If you want other than clicking on
Reset, muzprotsessor cleared and when you click on the Magic 
and the NMI, then You must collect this shemu.Diody series KD 
522 (1), resistor 5.1 Com. If you overstate muzprotsessor, you

must either submit
its clock
input frequency of 1.77
MHz, or collect
this shemu.Mikroshema TM2, preferably 1533 (555)
serii.Tak as
almost all Pentagonah and at all
Taganrogah on the clock input muzprotsessora fits 3.5 MHz, then 
the fix in the scheme just neobhodimo.Esli you

standing headscarf Turbo SH + PLL, then half
TM2 is on this scarf in the scheme turbirovanie SH.
If you want to have around ABC and ACB, then
simply tear off the channels B (4 foot AY8912, 3
leg AY8910) and C (1 foot AY8912, 38 foot
AY8910) on the circuit and drop them on any
dip switch, and a switch further in shemu.V result will be that 
you'll switch to change between themselves channels B and C.

If you muzprotsessor litter on the bus
data, and in general
malfunction,
instead of signal A14
serve on the decoding scheme muzprotsessora, a mixture of 
signals A14 and M1 through LI1 chip, preferably a series of 
1533 (555), or you can find free and elements in the computer's 
motherboard. If the decryption scheme muzprotsessora y

You wound up the address line A13 and
This can not be heard in the Western demonstrations
digitalok, you can safely place the signal
A13 start signal A14.Ne forget to
7 and 14 feet respectively, apply chip ground and +5 V.
Well, sort of muzprotsessorom finished.
The only thing I want to note that all schemes
work successfully, so you can easily
payalnik.Do take up soon.