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Toshiba T3100e improvements :

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* Enables [Fn]+key combinations (using right-Ctrl or right-Alt as [Fn]). In particular:
* Implements switching the built-in display adapter between the 'internal' plasma display ([Fn]+[Home]) and an 'external' CGA monitor ([Fn]+[End])
* Allows the video font to be toggled between thin and thick ([Fn]+[Right arrow]).
* Implements the four hardware fonts of the original, selectable in BIOS setup.
* Implements CRTC register 12h (attribute mapping and display type)
Patch from John Elliott
This commit is contained in:
SarahW 2017-10-28 16:03:44 +01:00
commit 65a9d17674
9 changed files with 296 additions and 115 deletions
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19
src/t3100e.c
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@ -5,6 +5,7 @@
#include "mouse.h"
#include "mem.h"
#include "device.h"
#include "t3100e.h"
#include "vid_t3100e.h"
/* The Toshiba 3100e is a 286-based portable.
@ -156,7 +157,7 @@ struct t3100e_ems_regs
uint8_t upper_pages; /* Pages of EMS available from upper RAM */
uint8_t upper_is_ems; /* Upper RAM is EMS? */
mem_mapping_t upper_mapping;
uint8_t notify;
} t3100e_ems;
void t3100e_ems_out(uint16_t addr, uint8_t val, void *p);
@ -335,6 +336,7 @@ void t3100e_map_ram(uint8_t val)
mem_size * 1024,
upper_len);
mem_mapping_enable(&t3100e_ems.upper_mapping);
mem_mapping_set_exec(&t3100e_ems.upper_mapping, ram + t3100e_ems.upper_base);
}
else
{
@ -351,13 +353,21 @@ void t3100e_map_ram(uint8_t val)
}
void t3100e_notify_set(uint8_t value)
{
t3100e_ems.notify = value;
}
uint8_t t3100e_sys_in(uint16_t addr, void *p)
{
// struct t3100e_ems_regs *regs = (struct t3100e_ems_regs *)p;
struct t3100e_ems_regs *regs = (struct t3100e_ems_regs *)p;
/* XXX Not implemented. Seems to return 0x0C on real hardware */
/* The low 4 bits always seem to be 0x0C. The high 4 are a
* notification sent by the keyboard controller when it detects
* an [Fn] key combination */
if (t3100e_log) pclog("IN 0x8084\n");
return 0x0C;
return 0x0C | (regs->notify << 4);
}
@ -411,6 +421,7 @@ void t3100e_ems_out(uint16_t addr, uint8_t val, void *p)
if (t3100e_log) pclog("Enabling EMS RAM at %05x\n",
page_to_addr(pg));
mem_mapping_enable(&regs->mapping[pg]);
mem_mapping_set_exec(&regs->mapping[pg], ram + regs->page_exec[pg]);
}
else
{