home *** CD-ROM | disk | FTP | other *** search
- Path: news.ox.ac.uk!elliott
- From: elliott@teaching.physics.ox.ac.uk (John Elliott)
- Newsgroups: comp.sys.sinclair,comp.sys.cbm,comp.sys.tandy,alt.folklore.computers
- Subject: Re: Neat hack proposal for old machines...
- Followup-To: comp.sys.sinclair,comp.sys.cbm,comp.sys.tandy,alt.folklore.computers
- Date: 4 Feb 1996 12:22:36 GMT
- Organization: Oxford University
- Message-ID: <4f28ec$t5o@news.ox.ac.uk>
- References: <4etnnl$4fj@news.microsoft.com>
- NNTP-Posting-Host: teaching9.physics.ox.ac.uk
- X-Newsreader: TIN [version 1.2 PL2]
-
- [I'm reading this in comp.sys.sinclair]
-
- In article <4etnnl$4fj@news.microsoft.com>, Dorian Garson (doriang@microsoft.com) wrote:
- : {Forgive me if this has already been addressed in a FAQ somewhere...}
-
- Well, the comp.sys.sinclair FAQ isn't posted regularly so I think you can
- be forgiven by css at least.
-
- : So we've got dozens of old relics that have nothing to save/load data
- : to/from but a cassette tape recorder.
-
- Not _quite_ true; the Spectrum can have add-on 3.5" disc drives and write
- to DOS discs. And a genuine Spectrum can read ZX81 tapes (I've done it). But
- yes, most people would only have cassette capability.
-
- : Now, note that a PC clone with a cheap sound card can generate and capture
- : audio signals.
-
- : Proposal: Is it possible to write an app that could capture programs &
- : data from an old computer's cassette interface via a sound card?
-
- It has been done for Sinclair machines, using the Z80 and PJPP emulators
- - look in <ftp://ftp.nvg.unit.no/pub/sinclair/utils/pc/>. However, a sound
- card is not very well suited for computer data signals, and Z80 prefers to
- use a dedicated tape interface. Since very few of us still have original IBMs
- with the tape interface, this is mostly done by building a small adaptor and
- plugging it into the LPT1 socket. See Z80.DOC for details.
-
- : If so, could it be architected to accomodate all popular data formats and
- : so that people could add new formats as they're discovered?
-
- Z80 emulates a real Spectrum very accurately, and can read just about any
- Spectrum cassette format (though sometimes the data have to be saved as vast
- VOC files). I don't know how many other formats it could be
- persuaded to read though.
-
- : The benefits are obvious: greater reliabilty, limitless, random access,
- : and greater ease in trading/distributing/archiving legacy code for old
- : hobbyist platforms.
-
- A lot of this has been done for Sinclair machines;
- <ftp://ftp.nvg.unit.no/pub/sinclair> holds mostly legally-distributable
- software.
-
- (+Rant)It's a pity the rest of Microsoft doesn't share this attitude towards
- old hobbyist platforms; making their 8-bit programs freeware (as Hitech have
- done with Hitech C) would be a very fine gesture.(-Rant)
-
- ---------------------------
- John Elliott | \o_~^~ \|/ _o \|/
- CHAOS in a sig... | | ==@V |\ V
- --------------------------- /| _,_ _//\\|. A .|.
-