Hardware & Devices

10-Sep-05 7:17

This is a real hardware question Wink | ;)

. I'm going to build something of an old C64 computer, I only want to take the processor, and as few components as possible.
I'm going to do a hardware that displays time in binary. I'll need the ROM to, or at least another ROM, the program I want to write is like this in assembly:

org	100h
	xor	cx,cx
	xor	dx,dx

start:
	inc	eax
	cmp	eax,07FFFFFh ;clockspeed in hz
	je	sec
	jmp	start
sec:
	xor	eax,eax
	inc	bl

	push	dx
	push	ax

	mov	ch,bl
	call	printANuminCHwithSpace

	mov	ch,cl
	call	printANuminCHwithSpace

	mov	ch,dl
	call	printANuminCH

	MOV	dl, 13	     ; print char
	MOV	ah, 02h
	INT	21h

	MOV	dl, 10	     ; print char
	MOV	ah, 02h
	INT	21h

	pop	ax
	pop	dx


	cmp	bl,60
	je	min
	jmp	start
min:
	xor	bl,bl
	inc	cl
	cmp	cl,60
	je	h
	jmp	start
h:
	xor	cl,cl
	inc	dl
	cmp	dl,24
	je	day
	jmp	start

day:
	xor	dl,dl
	jmp	start


printANuminCH:
	push	ax
	push	dx

	xor	ax, ax
	mov	al, ch	      ;2 char
	mov	dh, 100      ;1 char  skipping this for now
	div	dh

	add	al, 30h
	MOV	dl, al	     ; print char
	MOV	ah, 02h
	INT	21h

	xor	ax, ax
	mov	al, ch	      ;2 char
	mov	dh, 100
	div	dh
	mov	al,ah
	xor	ah,ah
	mov	dh,10
	div	dh

	add	al, 30h
	MOV	dl, al	      ; print char
	MOV	ah, 02h
	INT	21h

	xor	ax, ax
	mov	al, ch	      ;last char
	mov	dh, 10
	div	dh

	add	ah, 30h
	MOV	dl, ah	     ; print char
	MOV	ah, 02h
	INT	21h

	pop	dx
	pop	ax

	ret

printANuminCHwithSpace:
	push	dx
	push	ax

	call	printANuminCH

	MOV	dl, 20h       ; print char
	MOV	ah, 02h
	INT	21h

	pop	ax
	pop	dx

	ret

The displaying code isn't going to be there.
Here's how it could look like when implemented:

The ports should be replaced and represented by their appropriate value.

org	100h
	xor	cx,cx
	xor	dx,dx

start:
	inc	ax
	cmp	ax,0FFFFh ;clockspeed in hz
	je	sec
	jmp	start
sec:
	xor	ax,ax
	inc	bl
        out     bl,0h
	cmp	bl,60
	je	min
	jmp	start
min:
	xor	bl,bl
	inc	cl
        out     cl,1h
	cmp	cl,60
	je	h
	jmp	start
h:
	xor	cl,cl
	inc	dl
        out     dl,2h
	cmp	dl,24
	je	day
	jmp	start

day:
	xor	dl,dl
	jmp	start

Is there any good company, (europe should be best, I live in Sweden), that makes ROMs? How much could it cost. I don't want to use to much money.

I need 17 outputs, do I need a multiplexer? Where could I get one?

How is the machine code in the C64?

Thanks in advance

Niklas Ulvinge aka IDK

-- modified at 13:29 Saturday 10th September, 2005

Re: Real hardware

Douglas Troy19-Sep-05 7:33

Douglas Troy

19-Sep-05 7:33

Radio Shack used to sell ROMS (EPROMS) and the burners - but that was ages ago ... perhaps you can look on-line?

:..::. Douglas H. Troy ::..

Fold with us|Development Blogging|viksoe.dk's site

Re: Real hardware

Niklas Ulvinge19-Sep-05 7:37

19-Sep-05 7:37

Do you remmember any prise?

It should be cheeper now or more expensive...

Thanks for your reply anyway

Niklas Ulvinge aka IDK

Re: Real hardware

Douglas Troy20-Sep-05 7:07

Douglas Troy

20-Sep-05 7:07

No, sorry I don't ... but if you go to Google and search for EPROMs and/or IC chips, you'll probably find a company that "deals" in that type of thing ...

:..::. Douglas H. Troy ::..

Fold with us|Development Blogging|viksoe.dk's site

Almost hardware

Niklas Ulvinge9-Sep-05 6:27

9-Sep-05 6:27

This is an almost hardware question.

I'm working on a circut simulator.

The problem is that I don't know how to implement the ground.

Think like this:
- Everything, cords, batteries, diods, are objects. (I program in C#, and all objects is childs to a special class called item)
- The negative pole of a battery is giving output -100, wich could be called a low pressure.
- The positive pole of a battery is giving output 100, wich could be called a high pressure.
- Cords doesn't have any data, wich means if you want output from a cord it returns the sum of what it is conneced to.

Again, How do I make implement ground?

Niklas Ulvinge aka IDK

Re: Almost hardware

Anonymous14-Sep-05 19:29

Anonymous

14-Sep-05 19:29

It probably wouldn't be a bad idea to find information on the internet or in books that would help you get a better grasp of electrical circuits. As for implementing ground, the power of electricity needs somewhere to flow to. That would be ground. When you connect a positive or negative voltage to ground the power will flow. Between these you have your circuit or load.

Re: Almost hardware

Niklas Ulvinge15-Sep-05 2:08

Re: hard drive serial number

15-Sep-05 2:08

That problem was that one ground couldn't know about the other, and then how would the ground be able to know when to flow?

I solved the proplem by 'cheating', as the ground I'm going to use don't have to be that specific.

Now my system is really good, I'm going to implement kirchkorvs rule or something, can't remember the name...

Niklas Ulvinge aka IDK

hard drive serial number

rolati6-Sep-05 0:06

rolati

6-Sep-05 0:06

i have heard that not all hard drives have a serial number. they all have a volume serial number, which changes with every format, but not a hard disk serial number. different articles say different things about this issue and i'm confused. so my question is: do all hard drives have a unique unchanging serial number or not?

Rola

Trollslayer6-Sep-05 6:27

Trollslayer

6-Sep-05 6:27

Yes, see here[^].
This is fixed during manufacturing.

Elaine Rose | [Rose]

The tigress is here Big Grin | :-D

-- modified at 12:29 Tuesday 6th September, 2005

How to write driver on Windows?

rushing4-Sep-05 23:55

rushing

4-Sep-05 23:55

I want to write driver for wareless equipment, just like network adapter driver.
Please help me.
Thanks!

Niklas Ulvinge5-Sep-05 2:57

5-Sep-05 2:57

I think you need the DDK to get started...

Niklas Ulvinge aka IDK

fat_boy6-Sep-05 5:43

fat_boy

6-Sep-05 5:43

How much pain can you take? Do you have 6 months to spend (waste) doing this and still not get it right?

If so, get the windows 2003 server DDK. Then buy Walter Oneys book, Programming the Microsoft Windows Driver Model.

Then post loads of qestions to the relevant Google forums.

BTW, what sort of wirless is it? GPRS, UMTS? or WLAN (802.11) ?

Nunc est bibendum!

rushing7-Sep-05 14:56

rushing

7-Sep-05 14:56

Thank you for the commends.
I want to create a channel which download by DVB-T and upload by AT sets.

fat_boy12-Sep-05 4:37

fat_boy

12-Sep-05 4:37

DVB-T and upload by AT sets?

I dont follow you.

What kind of hardware is it and whet kind of network driver do you want it to look like to the system?

Nunc est bibendum!

wants help on to Communicate device through parralel port

rushing13-Nov-05 22:25

rushing

13-Nov-05 22:25

Thanks!
I have wrotten a driver for AT.

rohanr2p2-Sep-05 23:36

rohanr2p

2-Sep-05 23:36

i want to communicate with a device through LPT port, how can i do this using Win32(sdk) programming, plz help me.

Re: wants help on to Communicate device through parralel port

Indivara10-Sep-05 4:23

Indivara

10-Sep-05 4:23

check out the following links

http://www.beyondlogic.org/spp/parallel.htm[^]
http://www.beyondlogic.org/porttalk/porttalk.htm[^]

- Indivara

"...This city desert makes you feel so cold.
It's got so many people but it's got no soul..."
- Gerry Rafferty, Baker Street

dialogics telephony card and sweden?

Roger Alsing31-Aug-05 1:45

Roger Alsing

31-Aug-05 1:45

anyone got experience with dialogics telephonycards?

we have a problem where the card will get a "connect" event when we make a call even if the calee is not responding.

i guess its because the card thinks that the swedish bussy/not answering tones are something else (?)

any help would be very welcome

Re: dialogics telephony card and sweden?

Ray Cassick6-Sep-05 7:36

Ray Cassick

6-Sep-05 7:36

Try running through the PBXpert process to learn the tones in the area you are in then enable the resulting TSF file in the DCM for that board.

Should help out a little bit.

George Carlin wrote:
"Don't sweat the petty things, and don't pet the sweaty things."
Jörgen Sigvardsson wrote:
If the physicists find a universal theory describing the laws of universe, I'm sure the a**hole constant will be an integral part of that theory.

My Blog[^]

Configure router

Alex_Y30-Aug-05 3:33

Alex_Y

30-Aug-05 3:33

I have Linksys switch/router.

Now in my LAN I have one box on which FTP configured as
ftp://192.168.1.102:33331
Internaly in LAN all computers are able to use that ftp, but otside
when I dial

ftp://64.226.4.32:33331

It complaning that PORT ERROR occured

No my Router is configured to forward all 33331 port request to ftp box

App = ftp
Port = 33331
Forward IP = 192.168.1.102

Note: The same configuration works fine with HTTP

Any ideas?

Tnanks.

Smile | :)

Farhan Noor Qureshi30-Aug-05 7:12

Farhan Noor Qureshi

30-Aug-05 7:12

Have you tried ftp://64.226.4.32 ?

Farhan Noor Qureshi

^{if (this == this) thow this;}

Alex_Y30-Aug-05 8:18

Alex_Y

30-Aug-05 8:18

Cablevision lock port 21

Smile | :)

Farhan Noor Qureshi30-Aug-05 11:48

Farhan Noor Qureshi

30-Aug-05 11:48

Maybe they are blocking *all* ftp. Unsure | :~

Farhan Noor Qureshi

^{if (this == this) thow this;}

-- modified at 17:48 Tuesday 30th August, 2005