Re: 264/TED/Plus4 Story

From: Gerrit Heitsch <>
Date: Mon, 29 Aug 2011 17:11:18 +0200
Message-ID: <>
On 08/28/2011 09:43 PM, Hársfalvi Levente wrote:
> On 2011-08-27 19:32, Gerrit Heitsch wrote:
>> Do you remember the part numer of the hungarien kernal ROMs? The PAL
>> Kernal for everyone else was 318004-0x (with -05 being the last). Would
>> make a nice addition to my list of MOS chips.
> Yes. From the machine:
> 318030-01

Thank you. I try to assemble a list of all chips with a MOS/CSG logo 
made for the VC20 and up.

> This is from a Commodore 16. It is the only machine in my collection
> with such mask ROM and factory-made Hungarian keyboard. The rest of the
> text on the chip reads (C)1985 CBM , datecode 2985; on the bottom side,
> TAIWAN ; GH283104 ; 5 .

If this is the (compared to other MOS ICs) rather flat case with the 
angled sides and grey lettering, then, as far as I know,  it was made, 
or at least packaged by GI (General Instrument) in Taiwan.

> Looks like they made a production run of the
> localized Kernal rom, after having made the deal. The rest of the chips
> on the board all appear to have been manufactured late 1984, which
> suggest they already had a stock of populated PAL Commodore 16 boards,
> and probably only needed to replace the Kernal chip before final assembly.

Yes, the Kernal ROM (and the TED for other PAL variants in south america 
(*)) is the only location specific IC in the 264 series. They also made 
the 318004-04 until late 1984 and only then switched to the bug fixed 
318004-05. You can sometimes find a C16 with all ICs from 1984 except 
the 318004-05 with a 1986 datecode.

(*) There is a picture of a 8365 up on There is also 
supposed to be a 8366, but I haven't seen it yet.

In my C16s I have replaced the ROMs with properly programmed 27C128. 
Saves about 100mA in power, together with using a better power supply 
that keeps the system a few watts cooler without any irreversible 
changes. The original ROMs have been kept of course.

>> That's why I still like the C16 (with 64K of course). Much easier to
>> experiment on than the C64 since the BASIC is so much better and you get
>> about the same graphics capabilities as the C64 when it comes to bitmap
>> graphics. The hardware controlled 'flash' in text mode is another plus.
> Yeah, definitely.

One of the best ideas in BASIC 3.5 was 'GRAPHIC 2'...


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Received on 2011-08-29 16:00:13

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