Apple-1-HW
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Apple1_MiST
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update TODO and comments

This commit is contained in:
nino-porcino 2021-12-30 17:14:19 +01:00
parent 03281591f6
commit 94358985ee
2 changed files with 35 additions and 35 deletions
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2
rtl/apple1.v
View File

@ -23,7 +23,7 @@
//
module apple1(
input clk14, // 25 MHz master clock
input clk14, // 14 MHz master clock
input rst_n, // active low synchronous reset (needed for simulation)
// I/O interface to computer

68
rtl/apple1_mist.sv
View File

@ -4,20 +4,21 @@
//
//
// TODO integrate with mist-modules
// TODO make it work with SDRAM
// TODO load binary files into memory
// TODO support ACI interface for load and save
// TODO additional RAM with SDRAM
// TODO reset key from keyboard
// TODO cls key from keyboard
// TODO power on-off
// TODO special expansion boards: TMS9918, SID
// TODO white/green/amber switch?
// TODO use 7 MHz clock in display
// TODO isolate ps2 keyboard from apple1
// TODO check ps2 clock
// TODO ram refresh lost cycles
// TODO check display parameters vs real apple1
// TODO reset and cls key from keyboard
// TODO power on-off key ? (init ram)
// TODO reset if pll not locked
// TODO rename "vga" into "display"
// TODO reorganize file structure
// TODO check ps2 clock
// TODO integrate with mist-modules
// TODO support ACI interface for load and save
// TODO special expansion boards: TMS9918, SID
module apple1_mist(
input CLOCK_27,
@ -26,9 +27,9 @@ module apple1_mist(
input SPI_SCK,
output SPI_DO,
input SPI_DI,
//input SPI_SS2,
//input SPI_SS2,
input SPI_SS3,
//input SPI_SS4,
//input SPI_SS4,
input CONF_DATA0,
// SDRAM interface
@ -70,7 +71,7 @@ localparam CONF_STR = {
"APPLE 1;;",
"O34,Scandoubler Fx,None,HQ2x,CRT 25%,CRT 50%;",
"T6,Reset;",
"V,v1.00.",`BUILD_DATE
"V,v1.01.",`BUILD_DATE
};
localparam conf_str_len = $size(CONF_STR)>>3;
@ -79,7 +80,7 @@ wire st_reset_switch = buttons[1];
wire st_menu_reset = status[6];
wire clk14; // the 14.31818 MHz clock
wire clk_osd; // x4 clock for the OSD menu
wire clk_osd; // x2 clock for the OSD menu
wire r, g, b;
wire hs, vs;
@ -133,36 +134,36 @@ apple1 apple1
mist_video
#(
.COLOR_DEPTH(1),
.OSD_AUTO_CE(1)
.COLOR_DEPTH(1), // 1 bit color depth
.OSD_AUTO_CE(1) // OSD autodetects clock enable
)
mist_video
(
.clk_sys(clk_osd), // 2x the VDP clock for the scandoubler
.clk_sys(clk_osd), // OSD needs 2x the VDP clock for the scandoubler
// OSD SPI interface
.SPI_DI(SPI_DI),
.SPI_SCK(SPI_SCK),
.SPI_SS3(SPI_SS3),
.scanlines(2'b00), // scanlines (00-none 01-25% 10-50% 11-75%)
.ce_divider(1), // non-scandoubled pixel clock divider 0 - clk_sys/4, 1 - clk_sys/2
.scandoubler_disable(scandoubler_disable),
.no_csync(no_csync), // 1 = disable csync without scandoubler
.ypbpr(ypbpr), // 1 = YPbPr output on composite sync
.scanlines(2'b00), // scanline emulation disabled for now
.ce_divider(1), // non-scandoubled pixel clock divider 0 - clk_sys/4, 1 - clk_sys/2
.rotate(2'b00), // Rotate OSD [0] - rotate [1] - left or right
.blend(0), // composite-like blending
.scandoubler_disable(scandoubler_disable), // disable scandoubler option from mist.ini
.no_csync(no_csync), // csync option from mist.ini
.ypbpr(ypbpr), // YPbPr option from mist.ini
.rotate(2'b00), // no ODS rotation
.blend(0), // composite-like blending
// video input
// video input signals to mist_video
.R(r),
.G(g),
.B(b),
.HSync(hs),
.VSync(vs),
// MiST video output signals
// video output signals that go into MiST hardware
.VGA_R(VGA_R),
.VGA_G(VGA_G),
.VGA_B(VGA_B),
@ -189,13 +190,12 @@ user_io (
.buttons (buttons ),
.switches (switches ),
.scandoubler_disable ( scandoubler_disable ),
.ypbpr ( ypbpr ),
.no_csync ( no_csync ),
// ps2 interface
.ps2_kbd_clk (ps2_kbd_clk ),
.ps2_kbd_data (ps2_kbd_data )
.scandoubler_disable ( scandoubler_disable ), // get this option from mist.ini
.ypbpr ( ypbpr ), // get this option from mist.ini
.no_csync ( no_csync ), // get this option from mist.ini
.ps2_kbd_clk (ps2_kbd_clk ), // ps2 keyboard from mist firmware
.ps2_kbd_data (ps2_kbd_data ) // ps2 keyboard from mist firmware
);
endmodule