Category Archives: 6502

MTU K-1013 FDC Simulation

The emulation of the MTU K-1013 floppy Disk controller card allow you to use the CODOS and CP/M65 operating systems on the KIM-1 Simulator.
Read here all about the actual K-1013 card, incluidng a real replica by Eduardo Casino.

Replica by Eduardo Casino

The K-1013 emulation uses the same resources as the K-1013 card, but onlky if enabled.

The supporting files for the K-1013 are in the folder K-1013 and contain:

boot.pap
bootrom.bin
codos17.imd
diskimage.imd
mounts.cfg
t.txt

The usage of these files is explained on this page. You can add any file there at wish.

To start using the K-1013 go to the menu settings.

  1. Enable K-1013 emulation
  2. Copy the folder from the KIM-1 Simulator setup distribution archive called K-1013 to your disk.
  3. Choose the Disk images directory pointing to the folder K-1013. You will see the files on Disk 0 etc filled in, IMD files are for operating systems like CP-M/65 and CODOS. See below.
  4. Put the KIM-1 in TTY mode on the main window and start the emulator. The usual KIM prompt will appear and you are in the KIM-1 monitor.

Now you either start CP/M-65 or CODOS.

See also:

6502 tester NMOS CMOS 1-8MHz

The 6502 W65C02 6502C CPU tester NMOS / CMOS 1-8MHz is a CPU tester for 40 pin 6502/65C02 and WD65C02 and Sally. The...

680x/650x Test system

The 680x/650x Test system allows to test, with the CPU itself performing the test, the MC680X and MCS650X families. T...

Backbit Chip Tester PRO V2

A simple tio use and effective component test and ROM dump can be done with the wonderful Backbit Chiptester Pro V2. ...

PROTON KB-2 keyboard

Walter van Waard found a keyboard made by PROTON, a Dutch company from the 80ties that produced many 6502 and Z80 based ...

B.E.M. 6502 RAM VIA system

Photos of a BEM system, by Gerben Voort
Gerben Voort acquired a 6502 system and made photos of the system. A backplane, the BEM bus, a 6502 based CPU card, a double VIA card, a battery backed up memory card.

See also:

6502 tester NMOS CMOS 1-8MHz

The 6502 W65C02 6502C CPU tester NMOS / CMOS 1-8MHz is a CPU tester for 40 pin 6502/65C02 and WD65C02 and Sally. The...

680x/650x Test system

The 680x/650x Test system allows to test, with the CPU itself performing the test, the MC680X and MCS650X families. T...

Backbit Chip Tester PRO V2

A simple tio use and effective component test and ROM dump can be done with the wonderful Backbit Chiptester Pro V2. ...

PROTON KB-2 keyboard

Walter van Waard found a keyboard made by PROTON, a Dutch company from the 80ties that produced many 6502 and Z80 based ...

Brutech B.E.M. and Radio Bulletin

Brutech and the Radio Bulletin magazine worked together. The hardware produced or resold by Brutech was offered to the magazine for reviews. And Brutech placed many advertisements in the magazine. I visited the Brutech offices several times, it was close to where I lived.

BEM-1 card, as used in the KIM memory expansion article November 1977
The BEM bus
Brutech sold the VIM-1 and SYM-1, with their cards as expansions.
Review in Radio Bulletin November 1978
Brutech sold also the PC100, the Siemens OEM version of the AIM 65. Again the expansions could be used, same bus.
Review in Radio Bulletin August 1980
The AIM 65 and KTM-2 packaged as the Samson system,. the BEM-4 memory card, the SYMP universal programmer.
Review in Radio Bulletin November 1980
BEM RTC1 card, advert in the RB CB Special 1980
BEM-Impact 1000, a BEM-bus based development system, review in Radio Bulletin Oktober 1980
BEM Eurocard system, article by C.J. Bruyn, on the BEM bus, BEM-MON-1 (a TIM 6530 004 system!) and other cards

Micro-gebeuren november 1977, BEM-1, other BEM cards
Micro-gebeuren April 1980, BEM-PSIO-1 USART card, BEM-AD3, BEM-AD4
Micro-gebeuren Mei 1980, BEM-6 16/32K EPROM card

See also:

6502 tester NMOS CMOS 1-8MHz

The 6502 W65C02 6502C CPU tester NMOS / CMOS 1-8MHz is a CPU tester for 40 pin 6502/65C02 and WD65C02 and Sally. The...

680x/650x Test system

The 680x/650x Test system allows to test, with the CPU itself performing the test, the MC680X and MCS650X families. T...

Backbit Chip Tester PRO V2

A simple tio use and effective component test and ROM dump can be done with the wonderful Backbit Chiptester Pro V2. ...

PROTON KB-2 keyboard

Walter van Waard found a keyboard made by PROTON, a Dutch company from the 80ties that produced many 6502 and Z80 based ...

KIM-1 case

Posted on by

The KIM-1 came from MOS Technology and Commodore without a case or power supply. So you either build your own housing or looked at what other firms sold for the KIM-1.
There was a lot on offer, mostly targeted at system expansion with large cases.

One of the cases you saw quite often was this case. It came with one of my KIM-1’s. Small, simple and effective

A perfect solution for an unexpanded KIM-1. Quite popular in education. Add a power supply and you can start using it without exposing the electronics. The LED display was behind a red plexiglas cover, so that improves readability.

See also:

A demo of the new facilities in the KIM-1 Simulator 2.2.1

A demo of the new facilities in the KIM-1 Simulator 2.2.1 Scroll, copy paste of the console. New versions of KIM-...

KIM-1 connectors: beware the Chinese cheap variants!

The KIM-1 needs 2 edge connectors. The specifications are: card edge; PIN: 44; 3.96mm When you search for those, ...

Magazines: Compute! and Compute II

The pages om Magazines had an update. MICRO has its own page with all Best of MICRO pfds. Compute! and Compute II ar...

All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.

I got hold a about 10 cm of MTU documents. Several I already had in PDF format, some not available yet. I took the oppo...

KIM-1 Case

The KIM-1 came from MOS Technology and Commodore without a case or power supply. So you either build your own housing or looked at what other firms sold for the KIM-1.
There was a lot on offer, mostly targeted at system expansion with large cases.

One of the cases you saw quite often was this case. It came with one of my KIM-1’s. Small, simple and effective

A perfect solution for an unexpanded KIM-1. Quite popular in education. Add a power supply and you can start using it without exposing the electronics. The LED display was behind a red plexiglas cover, so that improves readability.

See also:

6502 tester NMOS CMOS 1-8MHz

The 6502 W65C02 6502C CPU tester NMOS / CMOS 1-8MHz is a CPU tester for 40 pin 6502/65C02 and WD65C02 and Sally. The...

680x/650x Test system

The 680x/650x Test system allows to test, with the CPU itself performing the test, the MC680X and MCS650X families. T...

Backbit Chip Tester PRO V2

A simple tio use and effective component test and ROM dump can be done with the wonderful Backbit Chiptester Pro V2. ...

PROTON KB-2 keyboard

Walter van Waard found a keyboard made by PROTON, a Dutch company from the 80ties that produced many 6502 and Z80 based ...

B.E.M. photos made by Gerben Voort

Posted on by

Brutech, a small Dutch company, made industrial quality microprocessor systems. 6502, 6809, process control.

Gerben Voort acquired a 6502 system and made photos of the system. A backplane, the BEM bus, a 6502 based CPU card, a double VIA card, a battery backed up memory card.
Read more about Brutech here.

See also:

A demo of the new facilities in the KIM-1 Simulator 2.2.1

A demo of the new facilities in the KIM-1 Simulator 2.2.1 Scroll, copy paste of the console. New versions of KIM-...

KIM-1 connectors: beware the Chinese cheap variants!

The KIM-1 needs 2 edge connectors. The specifications are: card edge; PIN: 44; 3.96mm When you search for those, ...

Magazines: Compute! and Compute II

The pages om Magazines had an update. MICRO has its own page with all Best of MICRO pfds. Compute! and Compute II ar...

All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.

I got hold a about 10 cm of MTU documents. Several I already had in PDF format, some not available yet. I took the oppo...

KIM-1, what changed in the Revisions?

Posted on by

I know of seven KIM-1 revisions, labeled Rev A-G and the first one unlabeled. Rev C is unknown!

What changed between these revisions?

Not much. The PCB underwent several changes around the logo area, from KIM-1 MOS to Commodore C-MOS. That happened from Rev A to Rev D, indicating the takeover by Commodore of MOS Technology. And some small numbers/artefacts etched in various Revs. The big change was in the clock circuit between the first edition and Rev A.

Some have serial numbers, the first ones on the back on the right, later had stamped/written numbers like PAxxx (Palo Alto) and SCxxx (Santa Clara) of Commodore production facilities

Clock circuit change
The first batch of KIM-1 suffered from the issue that the clock would not start. It was fixed in Rev A, with more components and a change in PCB layout.

Read more

See also:

A demo of the new facilities in the KIM-1 Simulator 2.2.1

A demo of the new facilities in the KIM-1 Simulator 2.2.1 Scroll, copy paste of the console. New versions of KIM-...

KIM-1 connectors: beware the Chinese cheap variants!

The KIM-1 needs 2 edge connectors. The specifications are: card edge; PIN: 44; 3.96mm When you search for those, ...

Magazines: Compute! and Compute II

The pages om Magazines had an update. MICRO has its own page with all Best of MICRO pfds. Compute! and Compute II ar...

All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.

I got hold a about 10 cm of MTU documents. Several I already had in PDF format, some not available yet. I took the oppo...

Jolt replica by Eduardo Casino

Posted on by

Eduardo Casino has created a faithful replica of the Jolt single board computer. Tested! Working!
The replica design is available on GitHub, A faithful reproduction of the JOLT

More on the Jolt here.

A faithful replica of the Microcomputer Associates Inc. JOLT computer, based on photos and information gathered from various sources on the internet.

The JOLT was the first 6502‑based computer kit to be commercially released, beating the KIM‑1 to market by several weeks; the latter would launch in January of the following year. It is a small SBC featuring a 6820 PIA and the 6530‑004 RIOT, also known as TIM‑1. It includes 512 bytes of RAM, a teletype interface, and an RS‑232 interface. The 6530‑004 contains, in its 1K ROM, the monitor software DEMON, also simply referred to as TIM.

See also:

A demo of the new facilities in the KIM-1 Simulator 2.2.1

A demo of the new facilities in the KIM-1 Simulator 2.2.1 Scroll, copy paste of the console. New versions of KIM-...

KIM-1 connectors: beware the Chinese cheap variants!

The KIM-1 needs 2 edge connectors. The specifications are: card edge; PIN: 44; 3.96mm When you search for those, ...

Magazines: Compute! and Compute II

The pages om Magazines had an update. MICRO has its own page with all Best of MICRO pfds. Compute! and Compute II ar...

All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.

I got hold a about 10 cm of MTU documents. Several I already had in PDF format, some not available yet. I took the oppo...
post

Jolt Replica by Eduardo Casino

Eduardo Casino has created a faithful replica of the Jolt single board computer. Tested! Working!
The replica design is available on GitHub, A faithful reproduction of the JOLT

A faithful replica of the Microcomputer Associates Inc. JOLT computer, based on photos and information gathered from various sources on the internet.

The JOLT was the first 6502‑based computer kit to be commercially released, beating the KIM‑1 to market by several weeks; the latter would launch in January of the following year. It is a small SBC featuring a 6820 PIA and the 6530‑004 RIOT, also known as TIM‑1. It includes 512 bytes of RAM, a teletype interface, and an RS‑232 interface. The 6530‑004 contains, in its 1K ROM, the monitor software DEMON, also simply referred to as TIM.

Here a proposal for a Bill of Material shopping list

BOM Jolt V3

U9 6530-004 NOS
U1 6502 NOS
U8 6821 NOS

U2, U3, U4, U5 2111 NOS

U6 74LS27 Mouser 595-SN74LS27N
U7 74LS00 Mouser 595-SN74LS00N
U13 74LS04 Mouser 595-SN74LS04N
U12 CD4081BE Mouser 595-CD4081BE

U10 1488 SN75188 Mouser 595-SN75188N
U11 1489 SN75189 Mouser 595-SN75189AN

CR1 1N914 Mouser 512-1N914

Q1 transistor 2N2907 T0-18 Mouser 494-2N2907A
Q2 transistor 2N2222 TO-18 Mouser 494-2N2222A

C1, C6, C8, C10, C12 tantalium 10 uF 25V Mouser TAP106K050CCS or
https://electronicparts-outlet.com/nl/tantaal-condensatoren-3-35v.html 10 uF 35V (exact size and color)
C7, C9, C11, C13 ceramic disc 10nF Mouser 75-562R5HKS10 (may be a little too big)
C2 10 pF Mouser 598-CD15CD100JO3F
C4 100nF Mouser 871-B32529C1104K000

R1, R2, R3, R4, R7, R12 3K3 1/4 W
R6, 10K 1/4 W
R8, R17 5K6 1/4 W
R14 1K 1/4 W
R16 4K7 1/4 W

R9 180 1/2 W
R10 270 1/2 W
R11 220 1/2 W

R5 Potentiometer 50K Mouser 531-PTC10V-50K or Mouser 652-3339P-1-503LF

J1 2×20 pin connector Double row MALE 2.54MM PITCH Right Angle PIN Header connector 2×20
J2 2×20 pin connector Double row MALE 2.54MM PITCH Right Angle PIN Header connector 2×20

7x IC socket 14 pin
4x IC socket 18 pin

Optional but recommended:
520-ECS-10-13-1XH Crystal HC49U 1 MHz (the large Quartz crystal 1.0 MHz HC6/U is very rare)

See also:

6502 tester NMOS CMOS 1-8MHz

The 6502 W65C02 6502C CPU tester NMOS / CMOS 1-8MHz is a CPU tester for 40 pin 6502/65C02 and WD65C02 and Sally. The...

680x/650x Test system

The 680x/650x Test system allows to test, with the CPU itself performing the test, the MC680X and MCS650X families. T...

Backbit Chip Tester PRO V2

A simple tio use and effective component test and ROM dump can be done with the wonderful Backbit Chiptester Pro V2. ...

PROTON KB-2 keyboard

Walter van Waard found a keyboard made by PROTON, a Dutch company from the 80ties that produced many 6502 and Z80 based ...

New versions of KIM-1 Simulator V2.0.0 and TIM Simulator V0.9

Posted on by

The KIM-1 Simulator has seen a large update.
A new piece of hardware is added, the SD Card/RTC Shield by Corsham Technology.
This addition has been written by Eduardo Casino. Lots of code contributed, thanks Eduardo!
He also added support for two operating systems using the SD Shield, xKIM by Bob Applegate and CP/M-65 by David Given.

The problem with local language keyboard layouts is solved by Eduardo. Now the host operating system takes care of the different layout.

The documentation has been enhanced and moved from a local limited html file to an online version.

Enjoy! See it here.

The keyboard and online improvements have been ported by me to the TIM/Jolt Simulator.

Download it here.

See also:

A demo of the new facilities in the KIM-1 Simulator 2.2.1

A demo of the new facilities in the KIM-1 Simulator 2.2.1 Scroll, copy paste of the console. New versions of KIM-...

KIM-1 connectors: beware the Chinese cheap variants!

The KIM-1 needs 2 edge connectors. The specifications are: card edge; PIN: 44; 3.96mm When you search for those, ...

Magazines: Compute! and Compute II

The pages om Magazines had an update. MICRO has its own page with all Best of MICRO pfds. Compute! and Compute II ar...

All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.

I got hold a about 10 cm of MTU documents. Several I already had in PDF format, some not available yet. I took the oppo...