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slc1: add note

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This commit is contained in:
hap 2021-04-27 10:38:31 +02:00
parent 58d3be06df
commit 673eb3a814
1 changed files with 32 additions and 30 deletions
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62
src/mame/drivers/slc1.cpp
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@ -8,45 +8,49 @@
http://www.jens-mueller.org/jkcemu/slc1.html http://www.jens-mueller.org/jkcemu/slc1.html
This computer is both a Z80 trainer, and a chess computer. This computer is both a Z80 trainer, and a chess computer.
The keyboard is different between the two, so The keyboard is different between the two, so
we redefine it for your convenience. we redefine it for your convenience.
There is no chess board attached. You supply your own There is no chess board attached. You supply your own
and you sync the pieces and the computer instructions. and you sync the pieces and the computer instructions.
The chess engine was copied from Fidelity's Sensory The chess engine was copied from Fidelity's Sensory
Chess Challenger 8. Chess Challenger 8.
When started, it is in Chess mode. Press 11111 to switch to When started, it is in Chess mode. Press 11111 to switch to
Trainer mode. Trainer mode.
Hardware Hardware
4 Kbytes ROM in the address range 0000-0FFF 4 Kbytes ROM in the address range 0000-0FFF
1 Kbyte RAM in the address range 5000-53ff (user area starts at 5100) 1 Kbyte RAM in the address range 5000-53ff (user area starts at 5100)
6-digit 7-segment display 6-digit 7-segment display
Busy LED Busy LED
Keyboard with 12 keys Keyboard with 12 keys
Keys: Keys:
0-7 : hexadecimal numbers 0-7 : hexadecimal numbers
Shift then 0-7 : Hexadecimal 8-F (decimal points will appear) Shift then 0-7 : Hexadecimal 8-F (decimal points will appear)
ADR : enter an address to work with. After the 4 digits are entered, ADR : enter an address to work with. After the 4 digits are entered,
the data at that address shows, and you can modify the data. the data at that address shows, and you can modify the data.
+ (inc) : Enter the data into memory, and increment the address by 1. + (inc) : Enter the data into memory, and increment the address by 1.
Pasting doesn't work, but if it did... Pasting doesn't work, but if it did...
Pasting: Pasting:
0-7 : as is 0-7 : as is
8-F : H, then 0-7 8-F : H, then 0-7
+ : ^ + : ^
- : H^ - : H^
ADR : - ADR : -
Test Paste:
[[[[[-510011^22^33^44^55^66^77^H8H8^H9H9^-5100
Now press up-arrow to confirm the data has been entered.
Test Paste:
[[[[[-510011^22^33^44^55^66^77^H8H8^H9H9^-5100
Now press up-arrow to confirm the data has been entered.
TODO:
- Make emulation more faithful, io_w doesn't make much sense from
a TTL wiring point of view.
- Likewise, having 2 auto-switching input mappings is convenient,
but not at all how the hardware works.
***************************************************************************/ ***************************************************************************/
@ -207,7 +211,6 @@ void slc1_state::machine_reset()
void slc1_state::mem_map(address_map &map) void slc1_state::mem_map(address_map &map)
{ {
map.unmap_value_high();
map.global_mask(0x4fff); map.global_mask(0x4fff);
map(0x0000, 0x0fff).rom(); map(0x0000, 0x0fff).rom();
map(0x4000, 0x43ff).ram().mirror(0xc00); map(0x4000, 0x43ff).ram().mirror(0xc00);
@ -215,7 +218,6 @@ void slc1_state::mem_map(address_map &map)
void slc1_state::io_map(address_map &map) void slc1_state::io_map(address_map &map)
{ {
map.unmap_value_high();
map(0x0000, 0xffff).rw(FUNC(slc1_state::io_r), FUNC(slc1_state::io_w)); map(0x0000, 0xffff).rw(FUNC(slc1_state::io_r), FUNC(slc1_state::io_w));
} }