3 Mar
2003
3 Mar
'03
10 a.m.
I am curious if anyone ever had one of the Legacy Enhanced Floppy Controllers for the
PCjr, was ever able to duplicate one, or know if it was ever possible to modify the
current controller to take on a 1.44mb capacity.
I have a Racore unit with a modified 3.5" 1.44mb drive that acts as 720kb, and is
fantastic, but would love that extra storage space if available!
Brian
3 Mar
3 Mar
12:58 p.m.
On Mon, 3 Mar 2003, Brian Heise wrote:
I am curious if anyone ever had one of the Legacy
Enhanced Floppy
Controllers for the PCjr, was ever able to duplicate one, or know if
"have?" no
"ever had" yes
I sold my Jr's a few years ago. But the guy who bought the one with the
"Legacy" board brought it back to sell it at VCF last year.
it was ever possible to modify the current controller
to take on a
1.44mb capacity.
I have a Racore unit with a modified 3.5" 1.44mb drive that acts as
720kb, and is fantastic, but would love that extra storage space if
available!
720K does not require any modification. See also, the PC-JX (never sold
in USA)
Using a 1.4M drive for 720K usually doesn't require any mods.
But getting 1.4M to work on a JR poses some problems.
The STOCK controller for the Jr. would need a minor hardware mod to get
the 500K bits per second data transfer rate.
And the stock controller does NOT do DMA. Can you write the code tight
enough to do the data transfer through the CPU at "high density" rates?
--
Fred Cisin cisin(a)xenosoft.com
XenoSoft http://www.xenosoft.com
2:09 p.m.
Fred
Thanks for the info. Actually, I did do a modification to mine. I guess I should clarify
my 3.5" floppy mod. I just hacked the Drive Select, so I could use the standard
Racore floppy drive cable. I didnt want, or have the means, as I do now, to make my own
cables.
Wish I had one of those controllers!
Brian
"Fred Cisin (XenoSoft)" <cisin(a)xenosoft.com> wrote:On Mon, 3 Mar 2003,
Brian Heise wrote:
I am curious if anyone ever had one of the Legacy
Enhanced Floppy
Controllers for the PCjr, was ever able to duplicate one, or know if
"have?" no
"ever had" yes
I sold my Jr's a few years ago. But the guy who bought the one with the
"Legacy" board brought it back to sell it at VCF last year.
it was ever possible to modify the current controller
to take on a
1.44mb capacity.
I have a Racore unit with a modified 3.5" 1.44mb drive that acts as
720kb, and is fantastic, but would love that extra storage space if
available!
720K does not require any modification. See also, the PC-JX (never sold
in USA)
Using a 1.4M drive for 720K usually doesn't require any mods.
But getting 1.4M to work on a JR poses some problems.
The STOCK controller for the Jr. would need a minor hardware mod to get
the 500K bits per second data transfer rate.
And the stock controller does NOT do DMA. Can you write the code tight
enough to do the data transfer through the CPU at "high density" rates?
--
Fred Cisin cisin(a)xenosoft.com
XenoSoft http://www.xenosoft.com
3:49 p.m.
New subject: WTB: PCjr Items
I am looking for PCjr cartridges, mainly ones from PC Enterprises, like the Combo
Cartrisge, Keyboard Buffer Cartridge, Quicksilver and JrVideo. Of course all PCjr
specific software and cartridges are welcomed in my home!
Also on the lookout for sidecars (Really want a TMC 850jr SCSI sidecar - also from PC
Enterprises), serial cards fitted for the modem slot, memory sidecars, MS sidecars, AST
PCNetIIjr's, Legacy Expansion units, HDD kits of anykind (I think Racore made one as
well).
I would be willing to trade or buy outright if you wish. Let me know what you have!
Thanks!!
Brian
6 Mar
6 Mar
9:54 a.m.
New subject: PCjr Items
I have a joystick new in box. If you're interested.
----- Original Message -----
From: "Brian Heise" <nampcjr(a)yahoo.com>
To: <cctalk(a)classiccmp.org>
Sent: Monday, March 03, 2003 9:45 PM
Subject: WTB: PCjr Items
I am looking for PCjr cartridges, mainly ones from PC
Enterprises, like
the Combo Cartrisge, Keyboard Buffer Cartridge, Quicksilver and
JrVideo. Of
course all PCjr specific software and cartridges are welcomed in my home!
Also on the lookout for sidecars (Really want a TMC
850jr SCSI sidecar -
also from PC Enterprises), serial cards fitted for the modem
slot, memory
sidecars, MS sidecars, AST PCNetIIjr's, Legacy Expansion units, HDD kits of
anykind (I think Racore made one as well).
I would be willing to trade or buy outright if you
wish. Let me know what
you have!
Thanks!!
Brian
1:20 p.m.
New subject: PCjr Items
Andrew
Well, if you are planning on just getting rid of it, I would take it off your hands, but
as of right now, I have about 20 of them sitting in a back room :) they could always use
another friend! :)
Brian
Andrew Strouse <kittstr(a)access-4-free.com> wrote:I have a joystick new in box. If
you're interested.
----- Original Message -----
From: "Brian Heise"
To:
Sent: Monday, March 03, 2003 9:45 PM
Subject: WTB: PCjr Items
I am looking for PCjr cartridges, mainly ones from PC
Enterprises, like
the Combo Cartrisge, Keyboard Buffer Cartridge, Quicksilver and
JrVideo. Of
course all PCjr specific software and cartridges are welcomed in my home!
Also on the lookout for sidecars (Really want a TMC
850jr SCSI sidecar -
also from PC Enterprises), serial cards fitted for the modem
slot, memory
sidecars, MS sidecars, AST PCNetIIjr's, Legacy Expansion units, HDD kits of
anykind (I think Racore made one as well).
I would be willing to trade or buy outright if you
wish. Let me know what
you have!
Thanks!!
Brian
7804
days inactive
7807
days old
5 comments
3 participants
participants (3)
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cisin＠xenosoft.com -
kittstr＠access-4-free.com -
nampcjr＠yahoo.com