102 lines
3.6 KiB
Org Mode
102 lines
3.6 KiB
Org Mode
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* -*- outline -*-
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Cpmtris v1.1 - (c) 1996,1999 Russell Marks
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A tetris clone for Z80-based CP/M machines.
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* License
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at
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your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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[The GNU GPL is in the file 'COPYING'.]
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* About cpmtris
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Cpmtris is a free tetris clone for CP/M machines. It works as is on
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VT52s (PCW and +3) and ZCN boxes, works with VT100s with 'cpmtris 1',
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and is patchable for other machines and terminals.
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It's a conversion of my Psion series 3 OPL tetris program, via my ZX81
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tetris. Both are free like cpmtris, and available on request.
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* Playing cpmtris
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It's tetris. Surely you've played tetris!?
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Ok, the basics. Blocks fall from the top of the screen. You have to
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fit them together to make solid horizontal lines, as a horizontal line
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of blocks disappears to make room for more blocks. And why is this the
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case? Well, if the pile of blocks reaches the top of the screen, it's
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game over. So it quickly gets important to fit the shapes together
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well, and not leave any gaps.
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You can rotate the blocks with 's', move them left or right with 'k'
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and 'l', and 'drop' them with 'd'.
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Cpmtris does not (yet) speed up. It starts pretty fast and stays that
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way. If you want to play it faster, specify a MHz rating on the
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command-line (see below) lower than your machine's actually is.
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* Command-Line Options
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In Unix terms, the synopsis (usage) is 'cpmtris [termtype [mhz10]]'.
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If 'termtype' is specified, it must be a single digit corresponding to
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a terminal type. If 'mhz10' is specified, it should be ten times the
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speed (in MHz) of the Z80 the machine has. For example, on a 3.5MHz
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machine you'd use '35'. You must have a 'termtype' specified to use
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'mhz10'.
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To explain this 'terminal type' stuff: It's traditional for
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full-screen CP/M programs to either include a configuration program,
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or (more usually) document patches which need to be made to support
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different terminals. Cpmtris does have a patch area (100h-17fh), but
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also has built-in support for a few terminals. These are:
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Type Terminal
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0 as defined in patch area
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1 VT100
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2 VT52 (PCW, +3, etc.) - this is the default
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3 ZCN (this is auto-detected)
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4 VC404
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The idea behind being able to specify both terminal type and speed
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when you run cpmtris is that it's more convenient if you sometimes use
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your machine via a terminal or terminal emulator. With most programs
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you have to devise some method of patching them when you want to use
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something other than the default configuration. With cpmtris, if (for
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example) I'm using my ZCN box via kermit on my Linux box - not
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uncommon - then it's just a matter of using 'cpmtris 1'.
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See the source (cpmtris.z) for details of the patch area.
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* Acknowledgements
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The original text-mode PC tetris game (which a surprising number of
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people have never played, it seems). It's inspired more clones than
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any other game since space invaders, I think. :-)
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Rush's "Presto" album. I listened to it constantly while hacking up
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cpmtris.
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* Contacting the Author
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You can email me at russell.marks@ntlworld.com.
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