🚀 go-pugleaf

Someone (whose signature doesn't match their return address) wrote:

>   And something more theorical : I think that the Z80 which is inside TI85s
> is far more powerful that the HP48's which is a 4-bit one, running at 1 MHz:
> I've been told that the Z80 couldn't properly work under a 2 MHz
> frequency.

1) These items would be more appropriate on Calc-TI, where plenty of
hackers discuss hardware stuff.

2) To answer your question, here's an old TI posting:

::Date: Thu, 08 Sep 1994 17:15 CDT
::From: Jeff Crump <JWC1.DPCPO004@DSKMGWS1.itg.ti.com>
::To: calc-ti@ds0.internic.net
::Subject: Calc-TI - Processor, Speed, and ROM information
::
::To provide more detail to: "The TI-81 and TI-85 use the Z80 processor.
::The TI-81 has 32K ROM and the TI-85 has 128K ROM."
::
::        Processor     Clock Speed      ROM Space
::TI-81       Z80         3.9 MHz         32K ROM
::TI-82       Z80         6.0 MHz        128K ROM
::TI-85       Z80         6.0 MHz        128K ROM
::
::-------------------------------------------------------------------------
::  Texas Instruments Calculator Products
::  P.O. Box 650311  M/S 3908             Internet: ti-cares@lobby.ti.com
::  Dallas, Texas  75265                       Fax: 214-917-7103
::-------------------------------------------------------------------------
>
 -------------------------------------------------------------------------------
> Stephane 'Peekaboo' Jantzen - stephane.jantzen@scinfo.u-nancy.fr
> Ecole Superieure d'Informatique et d'Applications de Lorraine (E.S.I.A.L.)

Information on HP's is regularly available on comp.sys.hp48

Mark Janeba			(503)370-6123
Dept. of Mathematics		e-mail:  mjaneba@willamette.edu
Willamette University		"Speaking for myself, not the university"
Salem, Oregon 97301-3922 USA