Jiffy Dos

[Andrew Wiskow]

BTW - If you're in the U.S. or Canada, you'd probably be better off ordering JiffyDOS from Eslapion.  He ships from Quebec.  Check here for his latest price list.

-Andrew

[StyleCHM]

I understand theyre autosensing, but I still like the option to revert back to the original factory ROM image. Ill probably never switch it back, but it's nice that it's there.

[RobertB]

If anyone has any other JiffyDOS ROM's that they'd like to add to this collection, please contact me!

Hey, the MSD SD-1 that I am bringing into this Sunday's FCUG meeting has JiffyDOS in it.

This Sunday the showdown between the MSD SD-1 and the SD-2,
Robert Bernardo
Fresno Commodore User Group
http://videocam.net.au/fcug
The Other Group of Amigoids
http://www.calweb.com/~rabel1/

[Andrew Wiskow]

Hey, the MSD SD-1 that I am bringing into this Sunday's FCUG meeting has JiffyDOS in it.

So... If I bring along my Promenade C1 clone, will you let me burn a copy of the ROM?  Looks like yet another demo I'll be doing...   

-Andrew

[RobertB]

So... If I bring along my Promenade C1 clone, will you let me burn a copy of the ROM?  Looks like yet another demo I'll be doing...   

Hurrah, another presentation!  Bring along your digital still camera, too, so that photos can be taken of the SD-1 and the SD-2 boards.

Thanks,
Robert Bernardo
Fresno Commodore User Group
http://videocam.net.au/fcug
The Other Group of Amigoids
http://www.calweb.com/~rabel1/

[Andrew Wiskow]

Hurrah, another presentation!  Bring along your digital still camera, too, so that photos can be taken of the SD-1 and the SD-2 boards.

Okay... I'll do that. 

-Andrew

[RobertB]

Here's the complete list of everything in the collection so far:

1541
1541-II
SX1541
1571
1571D
1581
C64
C128
SX-64
VIC-20
Plus/4 (NTSC only)
Turbo Master
IndusGT
FD-2000

Should I bring my FD-4000 to the Sunday FCUG meeting, too?

Truly,
Robert Bernardo
Fresno Commodore User Group
http://videocam.net.au/fcug
The Other Group of Amigoids
http://www.calweb.com/~rabel1/

[StyleCHM]

Isnt there also a ROM for the 1541C floating around?

[smf]

Isnt there also a ROM for the 1541C floating around?

It's probably the same as one of the others or corrupt, I think the sx64 rom is corrupt too.

[Mangelore]

Isnt there also a ROM for the 1541C floating around?

It's probably the same as one of the others or corrupt, I think the sx64 rom is corrupt too.

The C1541 ROM is in the archive. The SX64 one seems to work fine with VICE.

[Andrew Wiskow]

The C1541 ROM is in the archive. The SX64 one seems to work fine with VICE.

The readme file in the zip file says:

Code Select Expand

C1541.ROM is a 16K file, for the 1541C

1541.rom is the upper half, and replaces 901229-0x on older 1541 drives.

Eslapion told me that he checked the files, and the "C1541" file is for the older 1541, not the 1541C.  So neither he nor I have the actually JiffyDOS ROM for the 1541C, which is apparently different.  He said that a workaround is to swap out the board in a 1541C with a board from an older 1541.

-Andrew

[smf]

Isnt there also a ROM for the 1541C floating around?

It's probably the same as one of the others or corrupt, I think the sx64 rom is corrupt too.

The C1541 ROM is in the archive. The SX64 one seems to work fine with VICE.

Not for me, I meant the drive one & not the computer one. It hit unknown opcodes.

[Andrew Wiskow]

Not for me, I meant the drive one & not the computer one. It hit unknown opcodes.

Did you try burning the SX1541 ROM to an EPROM and install it in an SX-64?  Or are you trying to use the SX1541 ROM in VICE?  If it's the latter, then it most likely won't work, since I don't think VICE correctly emulates the 1541 drive in an SX-64.

-Andrew

[Mangelore]

Isnt there also a ROM for the 1541C floating around?

It's probably the same as one of the others or corrupt, I think the sx64 rom is corrupt too.

The C1541 ROM is in the archive. The SX64 one seems to work fine with VICE.

Not for me, I meant the drive one & not the computer one. It hit unknown opcodes.

Interesting. Well, I found the following files on my PC...
27c256-JDOS-SX64.rom
27c256_JDOS-SX64-1541.rom

PM me if you want a copy. I also have a file named 4sx64kernals.rom which seems to be a compilation of the standard SX-64 ROM, JiffyDOS 6.01, SX-64 AUDIE P.KORVING, and SX-64 AUDIE P.KORVING PROLOGIC SYSTEM.

[StyleCHM]

what are the last 2?

Im about to give one of my SX 64s a birthday overhaul...... including jdos.

[Mangelore]

Not sure but I think the Prologic one is for a parallel fast loader board like this one
http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=270181035736

[Andrew Wiskow]

JiffyDOS for the MSD SD-1, as well as CMD HD Boot ROM v2.8 and CMD RAMLink DOS v1.4, have been added to the Collection of JiffyDOS ROM's on my website.  I also reorganized the files (again), giving them all the correct .bin file extension, and making them all standard file lengths (a couple had an additional 2 bytes for the Commodore load address... they're fixed now).

-Andrew

[Andrew Wiskow]

What killed me was that he had time to port JiffyDOS to the VIC, plus/4 and 16...

C16?  I've not heard that Maurice made a version for the C16.

I hadn't heard of JiffyDOS for the C16 either...  But check this out -- there's a C16 up on eBay from Worldlam, with JiffyDOS!  $85 Buy-It-Now.  See here.

-Andrew

[RobertB]

I hadn't heard of JiffyDOS for the C16 either...

Well, the Plus4 JiffyDOS is supposed to be the same for the C16.  The only way to really find out is to take the Plus4 JD and plug it into a C16.

          Truly,
          Robert Bernardo
          Fresno Commodore User Group
          http://videocam.net.au/fcug
          The Other Group of Amigoids
          http://www.calweb.com/~rabel1/

[Andrew Wiskow]

Well, the Plus4 JiffyDOS is supposed to be the same for the C16.  The only way to really find out is to take the Plus4 JD and plug it into a C16.

Apparently that's true...  Eslapion said the same thing when I told him about it.  So do stock C16's and Plus/4's have the same Kernal ROM?

-Andrew

[Andrew Wiskow]

I've added a scan of the 1581 JiffyDOS installation instructions to my website.  This is in addition to the C64, 1541, and 1571 JiffyDOS installation instructions that were previously there.  Enjoy. 

[dabone]

Ok, I've got a standard flat 128 coming and I'd like to go ahead a burn my rom.
I've got about 100 or so 27c512 eproms that someone returned to my company and they just said here have em.


I'm using the following pinout as reference.

            27512
    +--------\/--------+
1 -|A15            Vcc|- 28
2 -|A12            A14|- 27
3 -|A7             A13|- 26
4 -|A6              A8|- 25
5 -|A5              A9|- 24
6 -|A4             A11|- 23
7 -|A3         /OE-Vpp|- 22
8 -|A2             A10|- 21
9 -|A1        /CE-/PGM|- 20
10 -|A0              D7|- 19
11 -|D0              D6|- 18
12 -|D1              D5|- 17
13 -|D2              D4|- 16
14 -|gnd             D3|- 15
    +------------------+

pin 1 and pin 27 would be sitting outside of the socket for the following.

So for a 2 bank bios burn I'd tie a resistor between vcc and pin 1 (A15) and pin 28 (vcc) to ignore the upper 32k bank.
Then I'd tie a resistor between 28 and 27 (Vcc and a14) with a switch on the a14 side that goes to gnd to switch between the lower banks. Is this correct or should I be driving a15 low instead of high?


Thanks,
dabone

(And I'm thinking about trying servant, should I  just tie a15 high and the rest of the pins stay the same?)

[megabit]

(And I'm thinking about trying servant, should I  just tie a15 high and the rest of the pins stay the same?)

You can put the 27512 in the internal ROM socket without doing anything to the 27512. The ROM socket is wired for a 27256 EPROM and pin 1 is Vpp which is normally tied high.
So, if you program a 27512 for servant, put the code in the upper half of the EPROM or you could play it safe and put the code in the lower half and upper half. Then plug it into the internal ROM socket.

Dan...

[dabone]

Ok, I'm still a little confused about what rom contents go together on a 128 (flat)

For the c64 kernal which ic (U32?) and what order are the roms in the eprom?
same question for the 128 rom (u34???).


Thanks,
dabone

[megabit]

Ok, I'm still a little confused about what rom contents go together on a 128 (flat)

For the c64 kernal which ic (U32?) and what order are the roms in the eprom?
same question for the 128 rom (u34???).


Thanks,
dabone

U32   251913-01   23128 ROM Basic 2 (C64 Code)
U33   318018-02   23128 ROM Basic 7.0 4000-7FFF (C128)
U34   318019-02   23128 ROM Basic 7.0 8000-BFFF (C128)
U35   318020-03   23128 ROM Kernal C000-FFFF (C128)


Last revisions:

U32   251913-01   23128 ROM Basic 2 (C64 Code)
U33   318018-03   23128 ROM Basic 7.0 4000-7FFF (C128)
U34   318019-04   23128 ROM Basic 7.0 8000-BFFF (C128)
U35   318020-05   23128 ROM Kernal C000-FFFF (C128)

Dan...